Megasporangium is equivalent to:

(1) Embryo sac

(2) Ovary

(3) Nucellus

(4) Ovule

Concept Questions :-

Pistil: Ovule
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Microsporangium is generally surrounded by 4 wall layers. Which of the following 3 wall layers perform the function of protection and help in the dehiscence of anther to release the pollen?
(a) Epidermis, tapetum, endothecium
(b) Epidermis, aril, endothecium
(c) Epidermis, endodermis, mesocarp
(d) Epidermis, middle layer and endothecium

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The above given diagram is an enlarged view of one microsporangium of a mature anther. Identify A, B and C
(a) A - Middle layer, B - Endothecium, C – Tapetum
(b) A - Endothecium, B - Tapetum, C - Middle layer
(c) A - Endothecium, B - Middle layer, C – Tapetum
(d) A - Tapetum, B - Middle layer, C - Endothecium

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Which of the following points is incorrect about sporopollenin?
(a) It is one of the most resistant organic material known
(b) It can withstand high temperature and strong acids and alkali
(c) 2 enzymes that degrade sporopollenin are known so far
(d) Pollen grains are well preserved as fossils because of presence of sporopollenin

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The above diagram shows some stages in microgametogenesis. Identify A, Band C:
               A                               B                              C
(a) Symmetric spindle        Generative cell           Vegetative cell
(b) Symmetric spindle        Vegetative cell           Generative cell
(c) Asymmetric spindle       Vegetative cell           Generative cell
(d) Asymmetric spindle       Generative cell           Vegetative cell

Concept Questions :-

Stamen: Male Gametophyte
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Difficulty Level:


Which of the following statements is false?

  1. Pollen grains represents male gametophyte
  2. In angiosperms partially developed male gametophytes are pollinated
  3. Generative cell is siponogenous while vegetative cell is spermatogenous
  4. Formation and differentiation of pollen grains is called microsporogenesis
  5. Hay fever is a pollen allergy
  6. Pollen grains of some plants produce severe allergy and respiratory or bronchial diseases
  7. Pollen grains are poor in nutrients.

(a) I and VII          (b) III and VII       (c) IV and V          (d) VI and VII

Concept Questions :-

Stamen: Male Gametophyte
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The viability of pollen grains depends upon:
(a) Prevailing temperature
(b) Prevailing humidity
(c) Genetic potentiality of the concerned species
(d) All of the above

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Which of the following has the least pollen viability?

(a) Cereals like wheat and rice           (b) Members of Rosaceae

(c) Members of Leguminoseae            (d) Members of Solanaceae

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Match the Column-I with Column-II:
    Column-I                                          Column-II
A. Funicle                                 I. Mass of cells within ovule with more food
B. Hilum                                  II. Basal part of ovule
C. Integument                        III. One or 2 protective layers of ovule
D. Chalaza                              IV. Region where body of ovule fuses with funicle
E. Nucellus                               V. Stalk of ovule
(a) A - I, B - II, C - III, D - IV, E - V           (b) A - V, B - IV, C - III, D - II, E - I
(c) A - IV, B - II, C - I, D - III, E - V           (d) A - I, B - III, C - V, D - II, E - IV

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Difficulty Level:


Which of the following sequences of development of embryo sac / female gametophyte is correct?
(a) Nucellus → Megaspore → Embryo sac
(b) Nucellus → Megaspore mother cell → Megaspore → embryo sac
(c) Nucellus → Megasporangium → Megaspore → Embryo sac
(d) Nucellus → Megagametophyte → Megaspore → Embryo sac

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Difficulty Level: