Sexual Reproduction in Plants

Q.

Name the male and female reproductive parts in a flower.

Q.

Why are flowers that bloom at night more fragrant and usually white in colour?

1. To attract polinators

2. To remain fragrant longer

3. To prevent fading of colour

4. To attract human

Q.

Which of these is the male sex cell in plants?

1. Stigma

2. Anther

3. Petal

4. Pollen

Q.

Which of the following nuclei are present in the pollen grain?

1. Generative nucleus

2. Polar nuclei

3. Tube nucleus

4. Non-polar nuclei

Q. flowers contain either pistil or stamen while flowers contain both stamen and pistil.

1. bisexual
2. asexual
3. Unisexual
4. Regular
5. Irregular

Q.

Which flower has only either pistil or stamen?

Q. Label the parts of a typical flower:

1. 1 - peduncle, 2 - petal, 3 - sepal, 4 - style, 5 - stigma, 6 - ovary, 7 - pollen sac, 8 - stamen
2. 1 - receptacle, 2 - petal, 3 - sepal, 4 - style, 5 - stigma, 6 - ovule, 7 - pollen sac, 8 - filament
3. 1 - receptacle, 2 - sepal, 3 - petal, 4 - stigma, 5 - style, 6 - ovary, 7 - stamen, 8 - filament
4. 1 - pedicel, 2 - sepal, 3 - petal, 4 - stigma, 5 - style, 6 - ovary, 7 - anther, 8 - filament

Q.

Name the male reproductive organ of a flower.

Q.

Distinguish between regular flowers and irregular flowers.

Q. The type of reproduction in sycon is .

1. fragmentation
2. spore formation
3. budding
4. regeneration

Q.

What is the function of tube nucleus?

Q.

Pollen grain has ______ nucleus/nuclei.

1. one

2. two

3. three

4. four

Q. Flowers with both androecium and gynoecium are known as_________.

1. stamens
2. anther
3. unisexual flower
4. bisexual flowers

Q.

Pollination is an example of which of the following types of interactions?

1. Commensalism

2. Mutualism

3. Parasitism

4. Predation

Q. Identify the parts of a pistil.
(more than one answer can be correct)

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

Q.

Complete the following analogy.
Bougainvillea : _______ :: Maize : Wind Pollination

Q.

Why do insect-pollinated flowers produce nectar?

Q.

Female reproductive parts in a flower are collectively called the ___.

Q.

Which of the following parts does not belong to the gynoecium?

1. Anther

2. Ovary

3. Style

4. Stigma

Q. Select the correct pair that represents the reproductive parts of a flower.

1. 
   Stamen, petal
2. 
   Pistil, sepal
3. 
   Stamen, pistil
4. 
   Sepal, stamen

Q. Each stamen has two parts filament and ___ .

Q.

Which of the following is a part of the male reproductive system in flowers?

1. Ovule

2. Filament

3. Style

4. Stigma

Q.

Which of the following activities takes place after fertilisation in plants?

1. Male gametes are formed

2. Pollen tube grows

3. The egg is formed in the ovary

4. Ovule becomes the seed

Q.

Which of the following are monocotyledonous endospermic seeds?

1. Cereal

2. Millet

3. Pea

4. Palm

Q.

Which of the following is the product of the fusion of the polar nuclei with the male gamete in plants?

1. Seed

2. Embryo

3. Endosperm

4. Zygote

Q.

Which among the following are NOT reproductive organs?

1. Spore

2. Testes

3. Ovary

4. Flower

Q.

The main carriers of pollen are ___________ and ____________.

Q. Question 5
Sketch the reproductive parts of a flower.

Q.

Which of the following cell gives rise to the male gametes in flowering plants?

1. Polar nucleus

2. Generative Nucleus

3. Tube nucleus

4. All of the above

Q.

Which of the following statements is incorrect with respect to hydrophilly?

1. Hydrophilous flowers produce numerous pollen grains​

2. Hydrophilous flowers are not colourful​

3. Hydrophilous flowers do not produce nectar

4. Hydrophilous flowers are always submerged in water