Tag: botany

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Questions Related to botany

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

_______ is propagated by means of cutting.

  1. Sugarcane

  2. Coffee

  3. Citrus

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vegetative reproduction is a type of asexual reproduction in which new plants are formed from the vegetative parts like, tubers, runners, suckers, rhizomes etc. Some of the plants can be propagated by the means of cutting. The part which is cut is allowed to grow into a new plant. Cane cutting which means the stem cuttings are used in the case of sugarcane. Stem cuttings with one nodal leaf are used in the coffee plants. Stem and root cuttings can be used in the Citrus species. 

Thus, the correct answer is option D. 

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

The main technique involved in agricultural biotechnology is called as 

  1. Tissue culture

  2. Transformation

  3. Plant breeding

  4. DNA replilcation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium of known composition. Plant tissue culture is widely used to produce clones of a plant in a method known as micropropagation. Plant tissue culture relies on the fact that many plant cells have the ability to regenerate a whole plant (totipotency). Single cells, plant cells without cell walls (protoplasts), pieces of leaves, stems or roots can often be used to generate a new plant on culture media given the required nutrients and plant hormones.
Therefore, the correct answer is option A.
Multiple choice botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

Which of the following is a type of artificial propagation?

  1. Layering

  2. Cutting

  3. Grafting

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A number of methods of artificial propagation of plants are used in agriculture, and horticulture. The three common methods for the artificial propagation of plants are: cuttings, layering and grafting. 

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

A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of

  1. Stock

  2. Scion

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Grafting is the artificial method of vegetative propagation which is applied for plants with weak root system. It involves transfer of part of one plant (scion) onto the lower part of another plant (stock) in such a way, to facilitate organic fusion or fusion of tissues. Here, the root stock is selected for its disease resistance and absorbing capacity which makes options A and C incorrect. Since, scion makes the upper above ground portion of plant, it is selected for superior quality of fruits and flowers. This makes option D incorrect and B correct. 

Thus, the correct answer is option B.

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

Propagation of a rose plant is through 

  1. Flowers

  2. Stem

  3. Fruits

  4. Roots
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The plants like rose, Bougainvillea, Chrysanthemum, grapes, sugarcane, bananas, and cactus, etc. can be grown by means of cuttings. For example, rose plants and chrysanthemums are propagated (or reproduced) by means c cuttings from stems (or shoots) as follows: A piece of stem (or side shoot) having bud is cut from an existing rose plant with the help of a knife. The lower part of this gutting, is buried in moist soil. After a few days, the end of cutting buried in soil develops roots and later on grows to become a new rose plant. 

So, the correct answer is 'Stem'

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

Which of the following can be reproduced by its stem  ? 

  1. Rose

  2. Carrot

  3. Bryophyllum

  4. Papaya
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The plants can be reproduced asexually by the method of vegetative propagation using the parts of the plants. The rose can be propagated by stem cutting. The stem can be cut with a bud and used for the growth of new plants. There are many plants which can be propagated through stem cuttings like sugar cane and guava.

Thus, the correct answer is option A. 

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

Removal of a small part of plant with a knife is called as

  1. Cutting

  2. Grafting

  3. Layering

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A small part of a plant which is removed by making a cut with a sharp knife is called as a 'cutting'. A cutting may be a piece of stem, root or even a leaf. While making a cut, care should be taken to see that there are some buds on it. In this method, a cutting of the parent plant having some buds on it is taken and its lower part is buried in the moist soil. After a few days, the cutting develops roots; shoot, and grows into a new plant. 

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

During grafting rootstock is generally derived from a plant 

  1. Efficient in water and mineral absorption

  2. Resistant to diseases

  3. That grows strong and healthy branches

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Grafting is a technique of combining two parts of plants so that they grow together. This allows combining the qualities of a strong, healthy, disease-resistant plant with the qualities of another plant usually one that produces good fruit or attractive flowers. The properties desired to be propagated are obtained from the rootstock, therefore, the plants that undergo this process should be efficient in water and mineral absorption as the rootstocks absorb more water and ions than the self-rooted plants and it must be resistant to diseases and should grow strong and healthy branches.
So, the correct answer is option D.
Multiple choice botany reproduction in angiospermic plants artificial vegetative propagation common modes of vegetative propagation vegetative propagation asexual modes of reproduction

The fusion of stems of two different plants is seen in the case of  

  1. Grafting

  2. Layering

  3. Cutting

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grafting is a method in which the cut stems of two different plants (one with roots and other without roots) are joined together in such a way that the two stems join and grow as a single plant. This new plant will have the characteristics of both the original plants.