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Hello!  Welcome to Test Biology Mock 2 - Reproduction in Flowering Plants

Instructions:

Time: 15 min                                                                                                         Full Marks: 120

  1. All questions carry equal marks and all 30 questions carry 4 marks each.
  2. You will be awarded minus one marks for each wrong answer.
  3. There is no deduction for NOT attempted question.

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1. What is common between vegetative reproduction and apomixis ?
2. Which of the following statement is correct
3. A typical Angiosperm embryosac at maturity have :
4. Transfer of pollengrains from the anther to the stigma of another flower of same plant :
5. Aleurone layer that is protein-rich found in some cereals is a part of :
6. Assertion - In the majority of Angiosperms, a typical anther is bilobed.
Reason - it's each lobe having two thecae.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
7. Assertion - Visit of insects to any flower always results in pollination.
Reason - insects never come to flower for pollen or nectar robbery in return they always perform pollination.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
8. Assertion - Cleistogamy is disadvantageous for plants.
Reason - Cleistogamous flowers do not open so sex organs do not receive sufficient light, which is essential for maturation of gametes.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
9. Assertion - Inner-most layer of microsporangium or pollen sac, tapetum is of physiological significance.
Reason - All kind of nutrition of developing pollen grains go through tapetum.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
10. Assertion - Megaspore mother cell undergoing meiosis is one of the important cells of the ovule.
Reason - It undergoes meiosis to produce megaspore which is the first cell of sporophytic generation.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
11. Assertion - It is believed particularly for some bryophytes and Pteridophytes that their distribution is limited.
Reason - They need water for transport of male gametes and fertilisation.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
12. Assertion - Cleistogamous flowers are invariably autogamous.
Reason - These flowers do not open at all.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
13. Assertion - Both wind and water pollinated flowers are not very colorful and do not produce nectar.
Reason - color and nectar act as the insect attractant.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
14. Assertion - Geitonogamy is functionally cross-pollination and genetically self-pollination.
Reason - It involves pollinating agent but pollen grains come from the same plant.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
15. Assertion - Strawberry and cashew are false fruits .
Reason - They arise before fertilisation.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
16. Assertion - Straight position of the embryo of Capsella is called torpedo stage.
Reason - Amphitropous type of ovule is found in Capsella.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
17. Assertion - Active research is going on in many laboratories around the world to understand the genetics of apomixis.
Reason - If hybrids are made into apomictics, there is no segregation of characters. .

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
18. Assertion - Development of pollen grains begin only after pollination.
Reason - Development of pollen grains takes place only on stigma.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
19. Assertion - The main plant of Angiosperms is in the form of the sporophyte.
Reason - Sporophyte is not differentiated into root, stem, and leaves.

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
20. Assertion - The unit of androecium is called Stamen .
Reason - The most important part of microsporophyll is anther .

A - Both assertion and reason are true and the reason is the correct explanation of the assertion.

B - Both assertion and reason are true but the reason is not the correct explanation of the assertion.

C -  If the assertion is true and the reason is false.

D-If both assertion and reason are false.
21. Apomixis was discovered by -
22. At which temperature , germination of seed can not possible in most of the plants -
23. Pollen grains of some plants cause -
24. The particular type of fossils of pollen grains present in the are may be helpful in the exploration of -
25. Obturators which help in fertilisation are out growth of -
26. Raphe and hilum in seed represent -
27. Double fertilisation means -
28. Who discovered fertilisation in plants
29. Bisporic type of embryo sac is found in
30. In which part of embryo maximum growth take place in hypogeal germination -