Class 7 Science Chapter 8 Question Answers - Reproduction in Plants

Very Short Q&A:

Q1: What is unisexual flower?

Ans : A flower may have either male or female reproductive parts. Such a flower is called unisexual flowers.

Q2: The fusion of male and female gametes is termed as _____________.

Ans : Fertilisation

Q3: Seed dispersal take place by

1. Wind
2. Water
3. Animals
4. All of the above.

Ans : All of the above.

Q4: Name the different modes of asexual reproduction.

Ans : There are different methods by which plants reproduce asexually. They are vegetative propagation, budding, fragmentation and spore formation

Q5: Modes of reproduction evolve only one parent is called unisexual reproduction.True/ False

Ans : True

Q6: Name vegetative parts of plants.

Ans : Root, stem and leaves.

Q7: Name the reproductive organ of a flowering plant.

Ans : Flower

Q8: State the two types of reproduction in plants.

Ans : Asexual and sexual.

Q9: What happens in sexual reproduction?

Ans : In sexual reproduction, the male and the female gametes fuse to form seeds that eventually develop into new plants.

Q10: The seeds are formed inside the______________.

Ans : Fruits

Q11: In asexual reproduction, a new plant is grown from any part of a plant involving the seeds.True/ False

Ans :  False

Q12: What is a node?

Ans : A node is a part of the stem from where a leaf grows.

Q13: _________________ Plant has buds on the edges of its leaves.

Ans : Bryophyllum

Q14: What kind of roots is called tubers?

Ans : Roots that store food are known as tubers.

Q15: What kind of roots are the food storage tanks for the plants?

Ans : Tubers

Q16: Yeast reproduces by a process called___________________.

Ans : Budding

Q17: Algae, the simplest green plants, reproduce by an asexual method known as _____________.

Ans : Fragmentation

Q18: What is a mould?

Ans : Mould is a type of fungus that grows on moist organic surfaces like leather shoes and moist walls.

Q19: How does a mould reproduce?

Ans : By the means of spores.

Q20: The anther of flower contains pollen sacs that produce____________________.

Ans : Pollen grains

Q21: Name the male reproductive unit of the flower.

Ans :  Pollen

Q22: Bisexual flowers contain both the stamens and the pistil. True/ False

Ans : True

Q23: Give examples of bisexual flower.

Ans : Mustard and rose.

Q24: Give examples of unisexual flower.

Ans : Cucumber, maize and watermelon.

Q25: How Pollen grains transfer from one flower to another?

Ans : By pollinating agents like wind, water and animals.

Q26: What is fertilization?

Ans : Fusion of the male and female gametes is called fertilisation.

Q27: The reproductive part of a plant is the

1. Flower
2. Stem
3. Leaves
4. Root

Ans : Flower

Q28: Name the cell formed as product of fertilization.

Ans : Zygote

Q29: After fertilisation, the ovary changes into a

1. Flower
2. Seed
3. Fruit
4. None of these.

Ans : Fruit

Q30: A spore producing plant is

1. Rose
2. Bread mould
3. Potato
4. Ginger

Ans : Bread mould

Q31: Bryophyllum can reproduce by its

1. Stem
2. Leaves
3. Root
4. Flower

Ans : Leaves

Q32: What is the other name for ovary?

Ans : Carpel

Q33: The stamen is male reproductive part or female reproductive part?

Ans : Male reproductive part.

Q34: Female gamete is formed in a ______________.

Ans : Ovule

Q35: Give examples of some seeds that are dispersed by animals.

Ans : Xanthium and Urena

Q36: Give examples of a seeds that is dispersed by water.

Ans : Coconut

Q37: _____________ is the female reproductive part of flower.

Ans : Pistil

Q38: Give examples of plants that reproduce by means of spores.

Ans : Moss and ferns.