Q1. The middle layer of the anther wall is:
(A) Always one layered
(B) Always two layered
(C) Always three layered
(D) One to three layered
Q2. The most common type of ovule present in angiosperms is:
(A) Anatropous
(B) Orthotropous
(C) Hemitropous
(D) Amphitropous
Q3. The outer three layers of the anther are for ____ and the inner layer is for _____
(A) Nutrition, protection
(B) Protection, dehiscence
(C) Protection and dehiscence, nutrition
(D) Nutrition, dehiscence
Q4. Pollen grains can be stored for a very long time in liquid nitrogen, which has a temperature of:
(A) Minus 30 degrees Celsius
(B) Minus 120 degrees Celsius
(C) Minus 130 degrees Celsius
(D) Minus 196 degrees Celsius
Q5. Both autogamy and geitonogamy are absent in:
(A) Castor
(B) Maize
(C) Papaya
(D) Both (A) and (B)
Q6. Water lily plants can still be pollinated even if the water current is negligible. This is because:
(A) It is insect pollinated
(B) It is wind pollinated
(C) The pollen grain is completely active and can move on its own
(D) Both (A) and (B)
Q7. Pollen grains can be preserved as fossils for a very long time. This is because:
(A) They contain all the energy of the plant
(B) They have an outer layer that is only degraded by enzymes
(C) They have sporopollenin
(D) Cellulose is absent in the inner layer
Q8. In which of the following families can pollen grains maintain viability for months?
(A) Solanaceae
(B) Leguminosae
(C) Rosaceae
(D) All of these
Q9. Which of the following is a direct structure formed by a functional megaspore?
(A) Ovule
(B) Endosperm
(C) Embryo
(D) Embryo sac
Q10. A plant needs to give a certain type of reward if it shows:
(A) Hydrophily
(B) Anemophily
(C) Entomophily
(D) All of these
Q11. Flowers with a single ovule in the ovary, having an inflorescence of many packed flowers and well-exposed stamens, are most likely to be pollinated by:
(A) Water
(B) Fish
(C) Wind
(D) Bats
Q12. The agent responsible for pollination in Vallisneria and seagrasses is:
(A) Wind
(B) Water
(C) Insect
(D) Bats
Q13. Which of the following is/are equivalent to an ovule?
(A) Megaspore
(B) Pollen mother cell
(C) Microspore
(D) Megasporangium
Q14. Whorl of carpel in a flower represents:
(A) Gynoecium
(B) Androecium
(C) Calyx
(D) Corolla
Q15. In a young anther, the center of each microsporangium is occupied by:
(A) Sporogenous tissue
(B) Pollen grain
(C) Tapetum
(D) Middle layer
Q16. In a transverse section, a typical microsporangium appears near __ in outline:
(A) Circular
(B) Tetragonal
(C) Oblate
(D) Rectangular
Q17. Mark the incorrectly matched:
(A) Single pistil – Monocarpellary
(B) Single pistil – Syncarpous
(C) Fused pistil – Syncarpous
(D) Free pistil – Apocarpous
Q18. Three cells are grouped together at the micropylar end in the embryo sac and constitute the:
(A) Egg apparatus
(B) Filiform apparatus
(C) Egg cell
(D) Antipodal
Q19. Monosporic development in angiosperms implies:
(A) Meiosis in megaspore mother cell
(B) Out of four microspores only one microspore is functional
(C) Out of four megaspores only one megaspore is functional and undergoes meiosis
(D) Out of four megaspores only one megaspore is functional and undergoes mitosis
Q20. A cross-pollination involving a pollinating agent, genetically similar to autogamy, is known as:
(A) Xenogamy
(B) Autogamy
(C) Geitonogamy
(D) Cleistogamy
Q21. In water lily, pollination occurs by:
(A) Bat
(B) Water
(C) Insect or wind
(D) Bird
Q22. Identify the correct statement:
(A) Pollen tube of incompatible pollen grows through stigma and style and reaches the ovary
(B) Bagging is required for both unisexual and bisexual flowers during artificial hybridization
(C) Pollen tube discharges one male gamete in synergid and the other male gamete in the egg cell
(D) Growth of the pollen tube in the style is not part of pollen-pistil interaction
Q23. Polyembryony is seen in:
(A) Citrus fruits
(B) Coconut
(C) Date palm
(D) Pineapple
Q24. Assertion: Endosperm development occurs before embryo development.
Reason: Cells of endosperm are filled with reserve food material and act as a source of nutrition for the developing embryo.
(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false
Q25. Assertion: Artificial hybridization requires emasculation in bisexual flowers.
Reason: Emasculation is the removal of anther before their dehiscence, preventing self-pollination.
(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false
ANSWERS :
Q1 (D)
Q2 (A)
Q3 (C)
Q4 (D)
Q5 (A)
Q6 (D)
Q7 (C)
Q8 (D)
Q9 (D)
Q10 (C)
Q11 (C)
Q12 (B)
Q13 (D)
