Pollination

Q.

The non-motile male and female gametes produced in flowering plants are brought together for fertilisation by a mechanism called __________.

1. Syngamy

2. Parthenogenesis

3. Pollination

4. Apomixis

Q. ____ acts as a receptive surface for pollen grains during pollination.
Select the $\text{correct}$ option to fill in the blank.

1. Style
2. Ovary
3. Ovule
4. Stigma

Q. During pollination, the pollen grains get carried to the _______ of a carpel.

1. stamen
2. stigma
3. ovary
4. filament

Q.

Which one of the following statements in not true?

1. Honey is made by bees by digesting pollen collected from flowers

2. Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups

3. Pollen grains of some plants cause severe allergies and bronchial afflictions in some people

4. The flowers pollinated by flies and bats secrete foul odour to attract them

Q. In Pinus, male gametes are produced in the pollen tube by the division of which of the following cells?

1. Body cell
2. Stalk cell
3. Generative cell
4. Vegitative cell

Q.

. In which of following, the plants have all roots?

(a) Podostemon

(b) Lemna

(c) Wolffia

(d) Utricularia

Q.

In which of the following scenarios, pollination will lead to fertilisation?

1. Pollen grains of pumpkin flower falls on the stigma of a pumpkin flower

2. Pollen grains of pumpkin flower falls on the stigma of an ash gourd flower

3. Pollen grains of ash gourd flower falls on the stigma of a pumpkin flower

4. Pollen grains of an ash gourd flower falls on the stigma of another ash gourd flower

Q. Which among the following is diploid?

1. PMC
2. MMC
3. Nucellus
4. All of the above

Q. The pollination in Pinus is

1. Entomophilous
2. Anemophilous
3. Hydrophilous
4. Malscophilous

Q.

Cross pollination can induce

1. Diseases in plants

2. Variation in plants

3. Non viable seeds in plants

4. None of the above

Q.

Which among the following are found in gymnosperms?

1. Ovary, style and stigma 2. Haploid endosperm

3. Triploid endosperm 4. Double fertilization.

5. Anemophily

1. 1 and 2

2. 2 and 5

3. 2, 4 and 5

4. 1, 3 and 5

5. 5