Which of the following plants produce(s) chasmogamous and cleistogamous flowers?

1. Viola (Commonpansy)                  

2. Oxalis

3. Commelina                                  

4. All of the above

A plant breeder employ technique of emasculation
1. To cover the flower with a bag.
2. To prevent self-pollination.
3. To prevent stamen from being contaminated.
4. To produce female plant.

Look at the diagram given below and answer
appropriately

(i) Since ___A___ is associated with fruit, it is called
as ___(i)___ .
(ii) Since ___B___ is present, fruit cannot be called
as ___(ii)___ .

1. A - Pericarp, (i) - True fruits
2. B - Seed, (ii) - Ex-albuminous
3. A - Thalamus, (i) - True fruit
4. B - Seed, (ii) - Parthenocarpic

Find correct match

1. a(iii), b(iv), c(ii), d(i) 

2. a(i), b(iii), c(iv), d(ii)

3. a(ii), b(i), c(iii), d(iv) 

4. a(ii), b(i), c(iv), d(iii)

Which is an incorrect statement?

I. Each cell of sporogenous tissue in anther is capable of giving rise to microspore tetrad.

II. The pollen grain represent male gametophyte

III. Pollen grains are usually triangular and 10-15 um in diameter.

IV. Sporopollenin is one of the most resistant organic materials which can be destroyed only by strong acids and alkali.

1. I, II are incorrect but III, IV are correct

2. III, IV are incorrect but I, II are correct

3. I, III are incorrect but II, IV are correct

4. II, IV are correct but I, III are incorrect

The hilum is a scar on the 

1. Seed, where micropyle was present

2. Seed, where funicle was attached

3. Fruit, where it was attached to pedicel

4. Fruit, where style was present

Mark the incorrect statement

Choose the correct statement from the following:

Which of the following is false about xenogamy?
1. It is the transfer of pollen grains from anther to stigma of another plant of the same species.
2. It produces genetic variation
3. It is genetically and ecologically (= functionally) cross pollination.
4. It occurs in cleistogamous flowers

Which of the following statements is false?