0

Reproduction in Plants-III

Attempted 0/20 Correct 0 Score 0

The propagation of plants by tissue culture technique is becoming popular because

  1. the plants produced have uniform growth and productivity characteristics

  2. most plants respond to this technique

  3. variability can be increased

  4. it is the most simple technique


Correct Option: A

Cambium causes growth in

  1. length

  2. circumference

  3. both (A) and (B)

  4. none of the above


Correct Option: B

Flower is a

  1. modified shoot

  2. modified leaf

  3. modified fruit

  4. modified root


Correct Option: A

During pollination, pollen grains are received by the

  1. ovary

  2. style

  3. stigma

  4. anther


Correct Option: C

By which of the following methods can a disease free plant be produced?

  1. Grafting

  2. Layering

  3. Cutting

  4. Tissue culture


Correct Option: D

Grafting is not possible in monocotyledons because they

  1. have conjoint vascular bundles

  2. have scattered vascular bundles

  3. have parallel venation

  4. have parallel venation


Correct Option: D
Explanation:

Correct Answer: have parallel venation

Edible part of potato is

  1. root

  2. stem

  3. fruit

  4. tuber


Correct Option: B

Pollination by water is called

  1. hydrophilly

  2. entomophilly

  3. ornithophilly

  4. none of the above


Correct Option: A

Which of the following are the essential parts of a flower?

  1. Calyx and corolla

  2. Calyx and androecium

  3. Corolla and gynoecium

  4. Androecium and gynoecium


Correct Option: D

What do you call the part of a plant which is used for culturing?

  1. Scion

  2. Stock

  3. Explant

  4. Callus


Correct Option: C

Which of the following is the biochemical basis of reproduction?

  1. RBC

  2. WBC

  3. Neuron

  4. DNA


Correct Option: D

Which of the following is the main advantage of vegetative propagation?

  1. It is quite easy.

  2. It is reliable.

  3. It produces genetically uniform progeny.

  4. It produces healthy, disease resistant plants.


Correct Option: C

Which of the following are reproductive parts of a flower?

  1. Calyx and corolla

  2. Sepals and petals

  3. Stamens and carpels

  4. Stamens and petals


Correct Option: C

The region of growth of an elongation in the root is

  1. at the tip

  2. in the middle

  3. in its entire extent

  4. a little distance away from the tip


Correct Option: A

Which of the following flowers is unisexual?

  1. Papaya

  2. Hibiscus

  3. Mustard

  4. Rose


Correct Option: A

Plants that are derived from the vegetative organs of a single plant are known as

  1. clones

  2. polyploids

  3. hybrids

  4. haploids


Correct Option: A

Fig is an example of

  1. cyathium

  2. verticillaster

  3. spike

  4. hypanthodium


Correct Option: D

Which of the following is a male reproductive part of a flower?

  1. Sepal

  2. Carpel

  3. Stamen

  4. Petal


Correct Option: C

The fruit develops from

  1. ovary

  2. sepal

  3. stamen

  4. carpel


Correct Option: A

Double fertilisation means the fusion of

  1. one male gamete with the egg and the other with the antipodal cell

  2. one male gamete with the egg and the other with the secondary nucleus

  3. one male gamete with the egg and other with the synergids

  4. two male gametes with an egg


Correct Option: A
- Hide questions