Test: Asexual Reproduction

10 Questions MCQ Test Biology Class 12 | Test: Asexual Reproduction

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Budding is a method of asexual reproduction found in______.

  • Hydra reproduces by asexual mode of reproduction. It reproduces by budding.
  • Budding is a type of asexual reproduction which does not involve the fusion of gametes.
  • A new organism develops from an outgrowth or bud due to cell division at one particular site. The bud remains attached to the parent plant and separates after it gets mature. It leaves a scar at the point of separation.
  • The newly developed organism is a clone to its parent cell. 

Budding in Hydra:


In grafting, the portion to be grafted on the main plant is called______.

  • Grafting is the process of joining two plants together and is grown as one. Such a plant has two portions - one upper and the other lower.
  • The upper portion of the plant is known as the Scion, which is grafted onto the lower portion known as the Rootstock.

Grafting of Plants:


An edible part of cauliflower is______.

  • The cauliflower head is composed of a white inflorescence meristem and it resembles those in broccoli, which differs in having flower buds as the edible portion.
  • Thus the edible part of cauliflower is the inflorescence and in broccoli, the edible part is the bud.

Asexual Reproduction:


There is no natural death in single-celled organisms like Amoeba and bacteria because

  • There is no natural death in single celled organisms like Amoeba and bacteria because parental body is distributed among the offspring. 
  • In such organisms, reproduction occurs by cell division where a cell (parent) divides into two halves and each rapidly grows into an adult (offspring). 

During unfavourable conditions, the Amoeba reproduces by:


__________is not a method of vegetative propagation.


Vegetative propagation methods include:

  • Rooting or Cuttings 
  • Layering or Marcotting
  • Grafting
  • Micropropagation

Propagation is the natural mechanism by which plants regenerate.


Vegetatively propagated plants are______.

  • Vegetative propagation is a form of asexual reproduction of a plant.
  • Only one plant is involved and the offspring is the result of one parent. The new plant is genetically identical to the parent.

Therefore, Option C is correct


Which one of the following statements is not correct?


1. In potato, banana, and ginger, the plantlets arise from nodes present in the modified stem. 

  • Tubers of potato are the underground modification of stem which stores starch. It has buds on the nodes which helps in the growth of new plant as these buds are meristematic in nature. The buds are also known as eye. 
  • Ginger is propagated by the rhizome. It is an underground stem modification. The terminal bud of rhizome may or may not grow into an aerial shoot. The stem is differentiated into nodes and internodes. Adventitious root occurs on the lower side. The plantlets arise from nodes present in the modified stem.
  • Banana is propagated by inflorescence. The female flowers of the inflorescence present on the node of the true stem matures and develop into fruit without fertilization of gametes. 

So, the statement is false.

2. Asexually developed plants are the clone of their own parents because of the fusion of gametes does not take place in vegetative propagation so there is no chance of recombination and variation. 

  • The parent cell divides to form daughter cell by mitosis due to which the offspring are genetically identical to the parent

The statement is true.

3. A zoospore is a motile asexual spore that uses a flagellum for locomotion. 

The statement is true.

4. Water hyacinth is an aquatic weed which is popularly known as the terror of Bengal because it grows very rapidly and eliminates the growth of several species and even eliminates them.

  • Due to its voluminous growth in water bodies, it increases the biological oxygen demand of the water and leads to the death of aquatic life which also cause a major decrease in the biodiversity due to alien species invasion.
  • The statement is true.

So, the correct answer is option A.


Vegetative propagation in mint occurs by______.

  • The vegetative propagation in mint (Mentha arvensis) occurs by Sucker.
  • Sucker is a non-green underground specialized stem developing from the underground base of an erect shoot or crown.

Vegetative propagation in Mint:
Vegetative propagation in Mint occurs by


The growing embryo (foetus) obtains nutrition from mother's body from______.

  • The embryo gets nourishment inside the mother body through a special tissue called placenta.
  • The embryo grows inside the mother's womb and gets nourishment from mother's blood through the tissue called placenta.
  • The placenta is a temporary organ that develops in the uterus during pregnancy. It attaches the fetus to the uterine wall. It also provides nutrients to the fetus and also allows the fetus to transfer waste product's to the mother's blood.

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