Biology

Plant Propagation Techniques

660 Questions

Plant propagation techniques cover both natural and artificial methods of cultivating plants, including micropropagation, tissue culture, and layering. These botanical concepts evaluate how desirable characteristics are multiplied and transferred into new plants. Questions on this topic routinely feature in the biology segment of various state and central competitive exams.

Micropropagation methodsArtificial vegetative propagationPlant tissue cultureLayering techniquesMeristem differentiation

Plant Propagation Techniques Questions

Multiple choice botany indian botanical gardens and herbarium importance of herbarium taxonomic aids taxonomy and systematic botany botanical gardens in india

Study the following statements regarding the preparation of herbarium sheets.


(i) The plant should be collected in the flowering stage.
(ii) Every detail regarding the plant such as locality, ecological conditions, vegetative and floral characters, etc. should be noted.
(iii) Plants are evenly pressed by unfolding all the plant parts between blotting papers (or newspapers) with the help of plant pressers.
(iv) Blotting papers need not be changed until the plant gets dried.
(v) After drying, the plant specimen is carefully mounted/pasted on the herbarium sheets.
(vi) The herbarium sheet is labeled on the lower right-hand corner representing the number of plant specimens, date of collection, etc.

Which of the given statements is/are not correct?

  1. (i) only

  2. (iv) only

  3. (i) and (iv)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blotting papers must be changed regularly during the drying process to prevent mold and ensure proper preservation. Therefore, statement (iv) is incorrect.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Advantages of hydroponic cultures are that

  1. Plants can be grown with controlled nutrients

  2. Natural calamities such as floods and drought can be avoided

  3. Pest problems can be kept controlled

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

Hydroponics is the art of growing plants in absence of soil in a nutrient medium of defined concentration. It was initiated by Von Sachs. The technique is useful because plants can be grown in a defined medium. Pests can be avoided and plants can be protected from floods and drought etc. Also plants can be protected from various soil and water pollutants. In future, when pressure on land increases due to population growth, hydroponics will emerge as highly useful technique.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Hydroponics is growing plants in

  1. Water

  2. Soil culture

  3. Solution of mineral nutrients

  4. Tissue culture medium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • In 1860, Julius von Sachs, a prominent German botanist, demonstrated, for the first time, that plants could be grown to maturity in a defined nutrient solution in the complete absence of soil. This technique of growing plants in a nutrient solution is known as hydroponics.
  • Hence Hydroponics is growing plants in a solution of mineral nutrients.
  • So, the correct answer is 'Solution of mineral nutrients'.
Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Hydroponic is a technique of growing

  1. Submerged plants

  2. Free floating aquatic plants

  3. Terrestrial plants in sand

  4. Terrestrial plants in water containing nutrients
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydroponics is a technique of growing terrestrial plants.

It uses a nutrient solution called Hoagland solution.
A growing medium is used along with a thin layer of nutrient solution.
So the correct answer is 'Terrestrial plants in water containing nutrients'.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Hydroponics is the

  1. Growing of aquatic plants.

  2. Growing of floating aquatic plants.

  3. Growing of plants in sand.

  4. Growing of plants in nutrient balanced aqueous medium.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydroponics was pioneered by Julius Von Sach. It is a technique of growing plants in aqueous solution of nutrients. It can be used to find out the essential nutrients for plants. This technique is also called soilless cultivation.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Hydroponic is a subset of what type of culture?

  1. Hydroculture

  2. Solid medium culture

  3. Xeroculture

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

Hydroponics is a sub set of hydroculture. In this method plants are grown without soil by using nutrient solutions.

Tissue culture is the method of growing plants from cells or tissues, derived from an organism, in an artificial medium.
Solid medium culture involves the growth of plants or microbes on a solid support which contains the nutrients such as agar gel, etc.
So the correct answer is 'Hydroculture'.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Gravel method of hydroponics is called as

  1. Solid medium culture

  2. Hydroculture

  3. Nutriculture

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

Solid medium culture is where plants or micro organisms are grown on a solid support like agar gel, etc.

Hydroculture involves the growth of plants in a nutrient solution with some solid support such as gravel or clay.
So the correct answer is 'Hydroculture'.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Culturing of plants in water$/$ soil-less medium is

  1. Hydroponics

  2. Sand culture

  3. Aeroponics

  4. Soil-less culture
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Culturing of plants in soil less medium is called hydroponics. Plants are raised in small tanks. They are filled with a solution containing appropriate quantities of all mineral elements. The solution is changed from time to time. It has a mechanism for aeration and circulation. Iron is added as Fe-EDTA otherwise it gets precipitated. EDTA is a chelating agent which keeps the metal ion in the soluble state. Hydroponics is useful in areas having thin, infertile and dry soils. Through this technique out of season fruits and vegetables can also be grown.

Thus, the correct answer is option A.

Multiple choice botany mineral nutrition in plants hydroponics hydroculture essential and non-essential mineral elements nutrients and nutrition

Technique of growing plants without soil in nutrient solution is called

  1. Parthenogenesis

  2. Hydroponics

  3. Aquaculture

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

Growing plants in a nutrient solution in absence of soil is called hydroponics. This technique was pioneered by Julius Von Sachs. It is also called soilless cultivation.

Multiple choice botany cell theory, cell specialization, and cell replacement number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Read the given statements and select the correct option.


(i) One maize root cell can give rise to more than 17,500 cells.
(ii) A cell in watermelon can increase in size upto 3,50,000 times.
(iii) The growth of pollen tube is measured in terms of length.
(iv) The growth of the leaf is measured in term of surface area.

  1. Statements (i) and (ii) are correct.

  2. Statements (iii) and (iv) are correct.

  3. Statements (i) and (iii) are correct.

  4. Statements (i), (ii), (iii) and (iv) are correct.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The root cells may give rise to more than 17,500 cells, the cells of the root undergo mitotic division in an arithmatic manner, where some of the dividing cells undergo differentiation while others continue to divide.

A water melon pulp contains about 90% of water, so the enormous increase in size of the cell is due to endosmosis.
The growth of the pollen tube is measures in $\mu$ meters
A leaf visually is a two dimensional structure hence it is measured in terms of surface area.
So, the correct answer is 'Statements (i), (ii), (iii) and (iv) are correct.'

Multiple choice botany economically useful plants and entrepreneurial botany horticulture organic farming horticulture and organic farming

Horticulture is related to

  1. Olericulture

  2. Floriculture

  3. Pomology

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

Horticulture has been defined as the culture of plants for food, comfort and beauty. It includes plant conservation, landscape restoration, soil management, landscape and garden design, construction, and maintenance, and arboriculture. It also includes Olericulture (science of vegetable growing, dealing with the culture of non-woody (herbaceous) plants for food), Floriculture, or flower farming(discipline of horticulture concerned with the cultivation of flowering and ornamental plants for gardens and for floristry, comprising the floral industry) and Pomology(is a branch of botany that studies and cultivates fruit). Hence, the horticulture is related to olericulture, floriculture and pomology.

So, the correct answer is 'All the above'.

Multiple choice botany plant breeding plant breeding for disease resistance and insect resistance method of plant breeding for crop improvement plant breeding for food production

Exchange of germplasm is carried mostly through shoot tips because it is

  1. Cheap

  2. Small and handy

  3. Virus free

  4. Genetically stable
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Shoot tip culture maintains virus free plant. It is used for international exchange of germplasm is vegetatively multiplied cultivars, e.g., Banana, Potato.

Multiple choice botany reproduction in angiospermic plants patterns of cropping rotation of crops cropping patterns

Production of plant without fertilization is done by

  1. Vegetative propagation

  2. Transplantation

  3. Grafting

  4. Both A and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In plants, vegetative propagation is a type of asexual reproduction in which a new plant develops from a vegetative part of plant. This vegetative part is basically a stem, root or any other part of plant which have tendency to reproduce.

Thus, the correct answer is option D.

Multiple choice social studies from hunting - gathering to growing food from gathering to growing food community decision making in a tribe lifestyle of early human

What is domestication?

  1. Process in which people grow plant and look after animals.

  2. Process in which people do trade

  3. Process in which people do farming

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

Domestication is the name given to the process in which people grow plants and look after animals. Very often, plants and animals that are tended by people become different from wild plants and animals.

Multiple choice botany biotechnology and genetic engineering use of microbes in biotechnology use of microbes in industrial applications useful microorganisms

Tissue culture medium is sterilised by

  1. Antifungal agents
  2. Keeping at -20$^o$C
  3. Autoclaving at 120$^o$C for 15 minutes

  4. Filtering through fine sieve
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tissue culture is the growth of cells or tissues separated from an organism. This is facilitated using a liquid, semi-solid medium which is sterilized so as to prevent the contamination by autoclaving them. It is a process whereby applying heat and pressure, microbes are killed in a container.

So, the correct answer is 'Autoclaving at 120-degree Celsius for 15 minutes'