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| 12th Biology Chapter 18 - Reproduction Questions Bank |
Biology 2nd Year Chapter 18 Reproduction Solved MCQs, Important Short Questions and Long Questions Bank
MCQs
Please select the right answer.
1. A carpel is a leaf which has been modified to produce
2. A flagellated motile sperm fertilizing a non-motile egg, is called
3. A form of asexual reproduction in which new individual grows out as a smallout growth and eventually separates from parent body is called
4. A human female has around how many oocytes in each of her ovary?
5. A pollen grain is
6. A protective sheath surrounding the plumule is
7. A protective sheath surrounding the radicle is
8. A single mushroom may produce how many spores per minute at the peak ofits reproduction?
9. A special type of reproduction in which seed starts germinating inside fruit is
10. A type of sygnamy in which both fusing gametes are flagellated and same insize are known as
11. A type of syngamy in which both fusing gametes are flagellated but differentin size are known as
12. A type of uniparous cyme in which succeeding branches are produced onalternate sides is termed as
13. A type of uniparous cyme in which succeeding branches are produced onsame side is termed as
14. After meiosis,what differentiaes into the mature sperm?
15. Artificial methods of asexual reproduction in plants is/are
16. Asexual reproduction differs from sexual reproduction in that it does not require
17. Asexual reproduction does not introduce
18. Atype sf asexusl reproducion in which parent organism simply divides into two daughter organisms is:
19. Between the seminiferous tubules are interstitial calls, which secrete
20. Corpus luteum starts secreting a hormone known as:
21. Cucumber, tomato, garden pea, maize, cotton is examples of
22. Date palms are
23. Decrease of FSH and increase of estrogen causes the pituitary gland to secrete
24. Developling seed are rich sourse of;
25. Development of an egg into Embryo without fertilization is called as:
26. Diploid parthenogenesis may occur in;
27. Duckbill platypus is a:
28. During delivery of baby, average loss of maternal blood is:
29. Each of the following is a part of a seed except the
30. Epigeal germination takes place due to rapid growth of
31. Evolution of pollen tube is parallel to the evolution of
32. External male genitalia are
33. Fertilization is the process which leads to the union of
34. Fertilization of human eggs most often takes place in the
35. Fraternal twins
36. From life cycle point of view the most important part of a plant is
37. From which of the following structures is the secondary oocyte ovulated?
38. Fruit ripening is often accompanied by a burst of respiratory activity called:
39. Gonorrhoa is caused by:
40. Human testes are packed with about how many seminiferous tubules whichproduce about how many million sperms every day?
41. Hypogeal germination takes place due to rapid growth of
42. If someone gives you a plant and tells you that it is an angiosperm, you knowthat during its life cycle it will produce
43. If staminate and carpellate flowers are present on same plant it is termed as
44. In angiosperms what gives rise to seed after fertilization.
45. In angiosperms, double fertilization produces two distinct portions of theseed.The endosperm portion’s role is to
46. In apomixis, an embryo is created from a diploid cell in the
47. In gymnosperms and angiosperms, the egg is produced in a female structurecalled
48. In gymnosperms female gametophyte consists of
49. In gymnosperms male gametophyte consists of
50. In gymnosperms male gametophyte develops from
51. In gymnosperms the main plant is diploid and
52. In human female only one ovum is usually discharged from the ovary at onetime and it is called
53. In human how many ova are usually discharged from overy at one time
54. In mammalian males, the reproductive and excretory system share the same
55. In mammals that are seasonal breeders, females are receptive only once ayear.This is called
56. In planst, spores are formed by 1, whereas gametes are formed by 2
57. In seed plants, sperm travel down through what to reach the egg?
58. In spermatophytes, important step in land adaptation is the evolution of
59. In terrestrial conditions which type fertilization is more common
60. In which type of inflorescence flowers are covered by large bracts calledspathes
61. In which type of inflorescence flowers develop into aeropetal succession.
62. It has been found that red light promotes flowering in
63. It is defined as a cluster of flowers, arising from the main stem axis orpeduncle
64. It is type of recemose inflorescence that is flat-topped or convex because theouter pedicels are progressively longer than the inner ones.
65. Natural methods of asexual reproduction in plants is/are
66. One of the following is not a method of asexual reproduction
67. Oviduct is generally caled as:
68. Ovulation is induced by:
69. Parthenocarpy is sometimes artificially induced in tomato, peppers etc by adding
70. Perennating organs are associated with which type of asexual reproduction?
71. Phytochrome comprises a pigment and a
72. Phytochrome exists in two forms i.e., P660 and
73. Promotion of flowering by cold treatment given to imbibed seeds or youngplants is known as
74. Rapid aging and low resistance to environmental stress and diseases are limitations of
75. Reproductiom is necessary for the survival of
76. Reproduction of egg without fertilization by sperm is termed as
77. Sexual reproduction is important to avoid
78. Single large shield shaped cotyledon of monocot seed is called
79. Spermatogenesis and oogenesis both involve
80. Sperms are formed in:
81. Spinach is
82. The animals that lay shelled eggs to protect the developing embryo from harsh terestrial conditions are called:
83. The animals which lay eggs are called
84. The end or complete stop of the menstrual cycle is called:
85. The fertilization occurs in
86. The first organ to emerge from the germinating seed is
87. The follicle cells, after release of the egg, are modified to form a specialstructure called
88. The hormone florigen is produced in
89. The lining or inner layer of the uterus is called the
90. The main embryo develops from the structure formed as a result of fusion of
91. The mass of dividing undifferentiated cells of the cut end of the shoot iscalled
92. The mature female gametophyte of an angiosperm is
93. The ovule contains
94. The part of embryo just above the cotyledons that terminates into plumule iscalled
95. The part of embryo just below the cotyledons that terminates into radicle iscalled
96. The pollen grain consists of
97. The process by whichbecomes embedded in endometrium is called .
98. The process in which fruit develops without fertilization is called
99. The production of new plants from underground stems is an example of
100. The release of ovum from the ovary is called
101. The sepals and petals are
102. The stamens are leaves modified for the production of
103. The technique of producing a genetically identical copy of an organism byreplacing the nucleus of an unfertilized ovum with the nucleus of a body cellfrom the organism is
104. The transfer of pollen grains to the female part of the plant is called
105. The type of recemose inflorescence with a short axis and multiple floralpedicels of equal length that appear to arise from a common point is called
106. The unisexual flowers are called
107. Three sets of glands secrete fluids which combine with the sperm to form
108. Tissue culture is a technique used to produce a large number of plantsquickly which are all
109. Uterus opens into the vestibule through:
110. Vegetative propagation does not involve
111. Vehicle for transport of male gamete in land plants is:
112. What controls the release of milk form the mammary glands?
113. What event occurs in the menstrual cycle when the level of progesteronedeclines?
114. What is advantage of asexual reproduction?
115. What is advantage of sexual reproduction?
116. What is produced mainly by the corpus luteum in the ovary followingovulation?
117. What is required?
118. What is/are basis for asexual reproduction?
119. Where does the uterus opens into the through cervix?
120. Which of the following cell type is haploid?
121. Which of the following disadvantages applies to tissue culture?
122. Which of the following is formed in the double fertilization and becomes anendosperm?
123. Which of the following is part of the third whorl of flower?
124. Which of the following statements is true of clones?
125. Which one is Parthenogenic Fruit?
126. Which one of the following is a type of asexual reproduction:
127. Which one of the following is the male reproductive part of a flower?
128. Which part ultimately matures into a fruit?
129. Which type of inflorescence is shown in the following diagram?
Short Questions
1. Are the cleavage divisions of the zygote regular or irregular?
2. Briefly describe the external and internal factors that affect growth in plants.
3. Define abnormal development?
4. Define aging and write its symptoms.
5. Define cellular differentiation in plants.
6. Define Cleavage?
7. Define differentiation?
8. Define embryology?
9. Define embryonic induction?
10. Define gastrulation in chick.
11. Define Gastrulation?
12. Define growth correlations.
13. Define growth?
14. Define neurocoel, blastocoel and gastrocoel.
15. Define optimum temperature.What is the range of optimum temperature for plant growth?
16. Define organizer and inducer substance. What are primary organizer and inducer substances?
17. Define regeneration with examples.
18. Define teratology and teratogens?
19. Differentiate between area pellucida and area opacca.
20. Differentiate between gerontology and teratology.
21. Differentiate between growth and development?
22. Differentiate between inhibitory and compensatory effects?
23. Differentiate between morula and blastula.
24. Differentiate between primary and secondary growth.
25. Due to what factors normal process of development is disturbed?
26. Explain cleavage?
27. Give definition of growth correlation?
28. Give the name of the two sheets like layers into which mesoderm splits and name the cavity formed between these. Differentiate between somatic and splanchnic mesoderm.
29. How do final size of cells of cortex and tracheids is attained in zone of maturation?
30. How does quality of light affect the growth in plants?
31. How does the intensity of light affect the growth?
32. How does the rate of growth differ throughout the life of an organism?
33. How many layers the lateral plate mesoderm is splitted into?
34. How neural plate is formed?
35. How neural tube is formed in chick embryo?
36. How notochord is formed in chick embryo?
37. How primitive streak in formed?
38. In which directions do the fibers and the tracheid’s of shoots and roots elongate during their growth?
39. In which ways does light influence growth in plants?
40. Name the different meristems in plants and their location.
41. Name the environmental factors which influence the growth rate in plants?
42. Name the factors by which rate of growth is influenced?
43. Name the stages of developmental processes of animals.
44. Of all the environmental factors which ones are the most important for controlling growth and development of plants?
45. State dedifferentiation of cells.
46. State the role of gray vegetal and grey equatorial cytoplasm.
47. What are growing points?
48. What are Intercalary Meristems?
49. What are Lateral Meristems?
50. What are meristems (growing points)?
51. What are neoblasts?
52. What are neuropores?
53. What are Teratogens?
54. What are the daughter cells formed by initial cleavage divisions of the zygote known as?
55. What are the phases (zones) of growth of the shoot and the root?
56. What did Thimann and Skoog conclude about apical dominance in 1934?
57. What do you mean by open growth?
58. What internal factors influence plant growth?
59. What is Acetabularia?
60. What is Apical Meristem?
61. What is area opaca?
62. What is area pellucida?
63. What is blastocoel in the embryo of chick?
64. What is blastoderm?
65. What is Blastula?
66. What is cleft palate?
67. What is coelom?
68. What is correlation?
69. What is discoidal cleavage?
70. What is embryology?
71. What is gastrocoel and from which germ layer it is originated?
72. What is gastrocoele?
73. What is Germ wall?
74. What is Henson’s node? Give its role.
75. What is meant by discoidal cleavage?
76. What is meristem?
77. Name its types based on position. Describe various types of meristems.
78. What is microcephaly?
79. What is Morula?
80. What is Neurlation?
81. What is neurocoel?
82. What is Neurula?
83. What is neurula? What is neurocoel?
84. What is open growth?
85. What is present goal of gerontology?
86. What is primary induction?
87. What is primitive node?
88. What is Primitive streak?
89. What is secondary growth?
90. What is the difference between epiblast and hypoblast?
91. What is the difference between inhibitory effect and compensatory effect?
92. What is the difference between the primary and the secondary growth?
93. What is the relationship between the apical dominance and the cytokinins?
94. What is the role of cytokinins in apical dominance?
95. What is the role of intercalary meristems?
96. What is the temperature for incubation for chick eggs?
97. What is zone of junction in developing chick embryo?
98. What was the work of Thimann and Skoog?
99. What was work of Dietrish?
100. When is the egg shell secreted in the hens?
101. Where does cell division occur most intensively and where does most rapid increase in the size of cells occur in the apical regions of the shoots and the roots?
102. Which process is defined as negative physiological changes?
103. Which tissue of the plant initiates secondary growth?
104. Which tissues of the plant initiate primary growth?
105. Which two layers are formed from blastoderm during gastrulation?
106. Write down the names of different kinds of cytoplasm’s with their functions.
107. Write down the range of temperature which can influence the rate of plant growth?
Long Questions
1. Define abnormal development. Explain different factors causing abnormalities?
2. Define abnormal development.Explain different factors causing abnormalities. Write a note on abnormal development.
3. Describe external factors that influence growth rate in plants.
4. Describe its causes and symptoms.
5. Describe the phenomenon of growth correlation.
6. Describe the process of regeneration in various animals.
7. Describe the role of nucleus in development.
8. Discuss different phases of plants growth.
9. Explain embryonic induction.
10. Explain the role of nucleus in development. Describe the role of nucleus in development.
11. What is aging? Explain this process.
12. What is growth? Discuss different phases of growth in plants. Discuss different phases of plant growth.
13. Write a note on Neurulation in Chick.
14. Write a note on regeneration.
15. Write detailed note on regeneration. Define and explain regeneration.