Sexual Reproduction in Plants

Q. Differentiate the growth in plants and that in animals.

Q.

Which is the edible part of cauliflower?

Q. What do you mean by double fertilization (2 marks)

Q. Which part of the flower contains the female gamete?

1. Ovary
2. Ovule
3. Embryo sac
4. Stigma

Q.

In the list of organisms given below, those that reproduce by the asexual method are (i) banana (ii) dog (iii) yeast (iv) Amoeba

1. (ii) and (iv)

2. (i), (iii) and (iv)

3. (i) and (iv)

4. (ii), (iii) and (iv)

Q.

Double Fertilization Is _________.

1. Syngamy and triple fusion

2. Fusion of two male gametes with one egg

3. Fusion of one male gamete with two polar nuclei

4. Fusion of two male gametes of pollen tube with two different eggs

Q. Which of the following abiotic agents helps in the process of pollination?

1. 
   Bees
2. 
   Wind
3. 
   Water
4. 
   Birds

Q.

What is the function of pollen grains in flowers?

Q.

Write a note on vegetative propagation in leaves.

Q.

The single cell produced after fertilization is called

1. Embryo

2. Zygote

3. Bulb

4. Corm

Q.

Formation of endosperm during double fertilization takes place by

1. Ovum and male gamete.

2. Two polar nuclei and two male gametes.

3. Two polar nuclei and one male gamete.

4. One polar nucleus and one male gamete.

Q.

Second male gamete + Two polar nuclei = .................

Q.

Perisperm is:

1. Persistent nucellus

2. Remnant of endosperm

3. Disintegrated secondary nucleus

4. The peripheral part of the endosperm

Q. is the part of flower that contains the female gametes.

1. Ovule
2. Style
3. Stigma

Q.

Give the name of the female reproductive parts of a flower.

Q.

What is hydrochory?

Q. Which part of the pistil connects the stigma to the ovary?

1. Style
2. Stem
3. Anther
4. Filament

Q.

Stalk of flower is known as .................

Q. The following processes occur during sexual reproduction in plants except

1. The male reproductive cell of the pollen grain travels down through long pollen tube to the ovary where it fuses with the female reproductive cell.
2. After fertilization, the formed zygote develops into an embryo.
3. After fertilization, the formed embryo develops into zygote.
4. Once pollen grain enters the ovary, fertilisation occurs and zygote is formed.

Q.

The acceptance or rejection of pollen is based on the biochemical interactions between the components of the pollen wall and pistil head.

1. True

2. False

Q. How many haploid nuclei are present in a mature pollen grain?

1. One
2. Two
3. Three
4. Four

Q.

Match the following

$\begin{array}{cc}\text{Column - I}& \text{Column-II}\\ \text{(i) Dicliny}& \text{(a) Development of sterile pollen or ovary}\\ \text{(ii) Dichogamy}& \text{(b) Anthers and stigma are placed at different position}\\ \text{(iii) Herkogamy}& \text{(c) Pollen release and stigma receptivity are not synchronised}\\ \text{(iv) Self sterility}& \text{(d) production of unisexual flowers}\end{array}$

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

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

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

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

Q.

In monocot embryo, radicle is enclosed in coleorhiza and plumule is enclosed in coleoptile.

1. True

2. False

Q. Unisexual flowers contain ___.

1. both stamen and carpel
2. only stamen
3. only carpel
4. either stamen or carpel

Q.

What happens to the mitochondria of the sperm post-fertilization?

Q.

In angiosperms, each microspore mother cell undergoing meiosis gives rise to a ___.

1. diad

2. triad

3. tetrad

4. four diploid cells

Q. In bryophytes, diploid chromosome number occurs in:

1. Spore mother cells
2. Gamete nuclei
3. gametophyte
4. spore

Q.

List any four specific characteristics of asexual reproduction

Q.

Pollen grains are present in the anthers of stamens.

1. True
2. False

Q.

Name the following:

The type of germination in which the cotyledons come above the ground.