Introduction to Reproduction

Q.

Define reproduction. What is the purpose of reproduction? [2 MARKS]

Q.

Animals can reproduce by sexual as well as asexual mode of reproduction. State true or false.

1. Asexual reproduction

2. Sexual reproduction

Q.

What are some units of vegetative propagation seen in plants?

Q.

__________ is the process by which living organisms produce new individual similar to themselves.

Q.

Explain Asexual and sexual reproduction in animals ? for 2 marks only

Q.

The organisms that help in the transfer of pollen grains are called _____.

1. transporters

2. pollinators

3. carriers

4. travellers

Q.

Production of new individuals from the vegetative part of parent is called_____________.

Q.

Name the following:

A jelly-like substance which fills most of the inside of the cell.

Q.

Give reasons for the following.

Wind pollinated flowers produce large quantities of pollen grains.

Q.

Mention the function of the following organ:

Vas deferens

Q. The reproduction in which one cell divides to form two daughter cells is called ___.

1. budding
2. binary fission
3. multiple fission
4. fragmentation

Q. The ability of organisms to generate lost or damaged parts is known as:

1. Fragmentation
2. Budding
3. Both $A\text{and}C$
4. Regeneration

Q. Question 5
Reproduction by budding takes place in

(a) Hydra
(b) Amoeba
(c) Paramecium
(d) Bacteria

Q.

Which of the following are the modes of reproduction in plants?

1. Asexual

2. Sexual

3. Asexual and sexual

4. None of these

Q.

Question 04(iv)
Indicate whether the following statements are True (T) or False (F).
A new organism develops from a cell called gamete. ( )

Q.

What is monoecious?

Q.

Which of the following is incorrectly matched?

1. A tadpole from a frog - asexual reproduction

2. Planting seeds for agriculture - sexual reproduction

3. A bacterium splitting into two - asexual reproduction

4. The birth of a baby elephant - sexual reproduction

Q. How sexual reproduction is advantageous over asexual reproduction?

Q. [A] What is meant by pollination ? Explain the structure of a germinating pollen grain with the help of a labelled diagram.

[B] With the help of suitable diagrams, describe :

• Binary fission in plants
• Budding in Yeast cell

Q.

Is reproduction important for humans? how they do it?

Q.

Define Vegetative propogation

Q.

The pollination of a carpel by pollen from a different flower is called _________.

Q.

Which of the following is NOT an advantage of reproduction?

1. For the continuity of generation

2. Tp prevent extinction of species

3. To increase the life span

4. To maintain the ecological balance

Q.

What is the advantage of sexual reproduction over asexual reproduction?

1. There are more variations
2. Less number of offspring are produced
3. Competition for food is less
4. There is no advantage - asexual reproduction is more advantageous

Q.

What is meant by germination?

Q. Reproduction is needed ________________.

1. For metabolism
2. Both A and B
3. To produce offspring
4. To ensure the continuation of similar kinds of individuals

Q.

WHAT IS THE DIFFERENCE BETWEEN ASEXUAL REPRODUCTION & SEXUAL REPRODUCTION?

Q. Reproduction is essential for living organisms in order to:

1. Keep the individual organism alive
2. Fulfil their energy requirement
3. Maintain growth
4. Continue their species

Q.

Which of the following is incorrectly matched?

1. A bacterium splitting into two - asexual reproduction

2. A tadpole hatching out of a frog egg - asexual reproduction

3. Planting seeds for agriculture - sexual reproduction

4. The birth of a baby elephant - sexual reproduction

Q. The jelly-like fluid substance present in cells is called _________________.

1. mitochondria
2. chloroplast
3. chromosome
4. cytoplasm