Tag: reproduction in angiospermic plants

Questions Related to reproduction in angiospermic plants

Plants of desired qualities are produced by

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Cutting

  2. Grafting

  3. Layering

  4. All of the above

Show answer
Correct Option: B
Explanation:

In grafting, we join two plants to each other. The upper part of the graft is called scion that forms the top portion of the plant, and lower part which we call understock makes roots or part of the stem. Grafting is usually joining of only two plants but it may be a combination of several. If we join a third plant between two plants then it forms the trunk or a portion of it. This third plant  is called an interstem.

What is the best time for growth of cuttings

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Summer

  2. Winter

  3. Spring

  4. Both spring and rainy season

Show answer
Correct Option: A
Explanation:

Cutting is a technique where the vegetative parts which are meristematic in nature is used for propagation so it can easily grow into a new plant. The best time for the growth of cutting is summer because cuttings are very delicate and are prone to fungal growth. In summers the chances of fungal growth are rare as there is least humidity.

So, the correct answer is option A.

Grafting is the art of joining parts of plants such that they grow as one plant. What is the name given to the part of the graft which gives rise to the upper portion?

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Bud

  2. Stock

  3. Scion

  4. Meristem

Show answer
Correct Option: C
Explanation:

Grafting and budding are horticultural techniques used to join parts from two or more plants so that they appear to grow as a single plant. In grafting, the upper part (scion) of one plant grows on the root system (rootstock) of another plant. In the budding process, a bud is taken from one plant and grown on another. So, the correct option is "C" (Scion).

Grafting results in

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Mixing of traits of two varieties without resorting to hybridisation

  2. Providing hormones and stimulating chemicals from stock to scion

  3. Quick growth of desirable variety with poor root system

  4. All the above

Show answer
Correct Option: A
Explanation:

Grafting is a horticulture technique where the living detached portion of the plant is used to regenerate the growth. One plant is selected for its roots and this is called the stock or rootstock. The other plant is selected for its stems, leaves, flowers, or fruits and is called the scion. The joining of scion and stalk is known as inosculation. 

Grafting involves mixing of traits of two varieties without resorting to hybridization as because stock and scion belong to two different plant species. The vegetative part is developed by the scion so fruit, flowering, branching, and leaves pattern depends on scion while the root pattern is influenced by the genome of the stock.
So, the correct answer is option A.

If you take the scion of desi mango and stock of dasheri mango, what type of mango will be produced?

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Desheri

  2. Desi

  3. Hybrid

  4. None

Show answer
Correct Option: B
Explanation:

The grafted branches present will give rise to dasheri mangoes whereas the rest of the branches will give rise to desi mangoes.

So, the correct option is 'Desi'.

In grafting process 

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Desirable characters of stock are transferred to scion

  2. Desirable characters of scion are transferred to stock.

  3. Desirable characters of both stock & scion are transferred to new bud

  4. Character transfer is not possible.

Show answer
Correct Option: B
Explanation:
Grafting is a horticultural technique used to join parts from two or more plants so that they appear to grow as a single plant. In grafting, the upper part (scion) of one plant grows on the root system (rootstock) of another plant. 
In this process, desirable characters of scion are transferred to stock because the stock being root system cannot be uprooted as it decreases the survival rate.
So, the correct option is 'Desirable characters of scion are transferred to stock'.

The vegetative own in the where a branch is injured defoliated and pegged down in the ground is known as

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Layering

  2. grafting

  3. cutting

  4. bud grafting

Show answer
Correct Option: A
Explanation:
In this method, the lower branch of the stem is bent down and partially defoliated. An injury is made in the defoliated portion. The injured and defoliated portion is covered with a light layer of moist soil in such a way that the growing tip of the branch remains above the soil surface. After a few days, the pegged portion develops adventitious roots. The rooted branch is then cut, separated from the parent plant and grown into a new plant. Examples - Jasmine, Grapevine, Strawberry, Raspberry, Cherry, etc.
So the correct option is 'Layering'.

In grafting the rooted plant is used as a ______.

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Scion

  2. Stock

  3. Stem

  4. Root

Show answer
Correct Option: B
Explanation:

In grafting, two firmly related plants are utilized to deliver another plant that has the ideal, consolidated attributes of both the parent plants. One plant is the stock, where the root system is taken and where the shoot system is used is called the Scion,

So, the correct option is 'Stock'.

In vegetative reproduction, when two different individuals participate then it is called, _________?

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Layering

  2. Grafting

  3. Cutting

  4. Doubling

Show answer
Correct Option: B
Explanation:

  • In grafting, two firmly related plants are utilized to deliver another plant that has the ideal, consolidated attributes of both the parent plants. One plant is, 
  • where the root framework is taken and the other is, where the shooting framework is utilized. The scion is appended to the load of the second plant in this strategy for fake vegetative proliferation. grafting can be done in plants like roses, apples, and avocado.

So, the correct option is 'Grafting'.

The part of the plant where metabolism takes place is

botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

  1. Aerial

  2. Sub-aerial

  3. Underground

  4. All the above

Show answer
Correct Option: A
Explanation:

Plant metabolism involves the complex of physical and chemical events of photosynthesis, respiration, and the synthesis and degradation of organic compounds. These processes are seen to occur in the aerial parts of the plant. So, the correct option is 'Aerial'.