Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

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

Hybridisation refers to crossing between genetically ______ plants.

  1. Similar

  2. Dissimilar

  3. Both A or B

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

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

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

  1. Clonal propagation

  2. Crop rotation

  3. Hybridization

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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. 
Multiple choice biology food production uses of animals agro-complimentary occupations improvement of crop production

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

  1. Oligocene

  2. Eocene

  3. Pliocene

  4. Paleocene

  5. Miocene
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Paleocene epoch, following the K-Pg extinction, saw the rapid diversification and radiation of mammals, birds, and pollinating insects as they filled ecological niches left vacant by dinosaurs.

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

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

  1. Good disease resistance

  2. Outstanding tillering

  3. More developed root system

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

Hybrid varieties of wheat are specifically bred to combine multiple beneficial traits, including disease resistance, improved growth characteristics like tillering, and better root development.

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

White revolution is associated with the increase in the production of__________

  1. Milk

  2. Wool

  3. Egg

  4. Meat
Reveal answer Fill a bubble to check yourself
A Correct answer
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".

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

White Revolution is related to the increase in production of_____________

  1. Egg

  2. Wool

  3. Milk

  4. Meat
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice biology food production uses of animals agro-complimentary occupations improvement of crop production animal- the base of our life

Jamnapari and Black Bengal are breeds of

  1. Goat

  2. Cow

  3. Buffalo

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

Multiple choice biology organization of life

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

  1. Myxine

  2. Sharks

  3. Bony fishes
  4. Both $(A)$ & $(B)$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Most vertebrates are osmoregulators, but Myxine (hagfish) are osmoconformers, and sharks are osmoconformers that maintain internal osmolarity near that of seawater using urea. Since both A and B are correct examples of non-osmoregulating vertebrates, D is the correct choice.