Tag: biology

Questions Related to biology

Hybridisation refers to crossing between genetically ______ plants.

biology food production uses of animals agro-complimentary occupations improvement of crop production

  1. Similar

  2. Dissimilar

  3. Both A or B

  4. None of the above

Show answer
Correct Option: B
Explanation:

One way of incorporating desirable characters into crop varieties is by hybridisation. Hybridisation refers to crossing between genetically dissimilar plants.

Thus, the correct answer is option B.

........... is a technique which involves the union of two genetically dissimilar parents.

biology food production uses of animals agro-complimentary occupations improvement of crop production

  1. Clonal propagation

  2. Crop rotation

  3. Hybridization

  4. None of the above

Show answer
Correct Option: C
Explanation:
The crossing between two plants of different species to produce a new variety is called hybridization. The parent plants belong to different species and are genetically dissimilar to each other. The new plant which is produced is known as the hybrid which possesses superior characters of both the parent plants. The hybrid is called as hybrid vigour which has better characteristics when compared to the parental types. The traits which are considered for hybridization are resistance to pests, insects and diseases, an increase in the productivity and high yielding, tolerance to adverse conditions, etc. 
Thus, the correct answer is option C. 

Major radiation of mammals birds and pollinating insects span took place in which epoch span _____________.

biology food production uses of animals agro-complimentary occupations improvement of crop production

  1. Oligocene

  2. Eocene

  3. Pliocene

  4. Paleocene

  5. Miocene

Show answer
Correct Option: D

Which of the following is an advantage of hybrid variety of wheat?

biology food production uses of animals agro-complimentary occupations improvement of crop production

  1. Good disease resistance

  2. Outstanding tillering

  3. More developed root system

  4. All of the above

Show answer
Correct Option: D

White revolution is associated with the increase in the production of__________

biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

  1. Milk

  2. Wool

  3. Egg

  4. Meat

Show answer
Correct Option: A
Explanation:

  • The white revolution is associated with an increase in the production of milk. In India, it was launched by Dr. Kureinn who is also known as the father of the white revolution.

So the correct answer is "Milk".

White Revolution is related to the increase in production of_____________

biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

  1. Egg

  2. Wool

  3. Milk

  4. Meat

Show answer
Correct Option: C
Explanation:
  • White Revolution in India was a plan of three phases launched in 1970 by the National Dairy Development Board. 
  • Its aim was to increase India's dairy production until India became self-sufficient in milk. 
  • This program was highly successful and in 1998, India became the largest milk producer in the world. Thus the correct answer is option C.

Jamnapari and Black Bengal are breeds of

biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

  1. Goat

  2. Cow

  3. Buffalo

  4. Sheep

Show answer
Correct Option: A
Explanation:

Jamnapari and Black Bengal are the breeds of goats. The Jamnapari goats are of Indian origin and are reared for its high milk and meat yielding capacity. Black Bengal goats are usually reared in Bangladesh. They are reared for milk and meat and generates employment for the people. Thus, the correct answer is A.

Sheep provides with 

biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

  1. Meat

  2. Hide

  3. Wool

  4. All of the above

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Correct Option: D

Goat provides with

biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

  1. Meat and milk

  2. Hide

  3. Wool

  4. Both B and C

Show answer
Correct Option: A

Most vertebrates can maintain a constant internal osmolarity different from the surrounding medium, except

biology organization of life

  1. Myxine

  2. Sharks

  3. Bony fishes

  4. Both $(A)$ & $(B)$

Show answer
Correct Option: D