List of top Biology Questions

Life cycle of Ectocarpus and Fucus respectively are:

Identify the wrong statement in context of heartwood:

Zygotic meiosis is characteristic of ;

Select the correct route for the passage of sperms in male frogs :

Which of the following is made up of dead cells?

The number of roots of equation $\cos \, x + \cos \, 2x + \cos \, 3x = 0$ is $(0 \le x \le 2 \pi )$.

A disease caused by an autosomal primary non- disjunction is:

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

Climax community is a state of:

Plants which produce characteristic pneumatophores and show vivipary belong to :

The decomposers in an ecosystem are ______

The pH of nutrient medium in plant tissue culture is adjusted between _____

A decrease in blood pressure/volume will not cause the release of

The vascular cambium normally gives rise to

Homozygous purelines in cattle can be obtained by

Which one of the following statements is not valid for aerosols?

GnRH, a hypothalamic hormone, needed in reproduction, acts on

Among the following characters, which one was not considered by Mendel in his experiments on pea?

Good vision depends on adequate intake of carotene rich food.
Select the best option from the following statements:

1. Vitamin A derivatives are formed from carotene .
2. The photopigments are embedded in the membrane discs of the inner segment.
3. Retinal is a derivative of vitamin A.
4. Retinal is a light absorbing part of all the visual photopigments.

Which one from those given below is the period for Mendel's hybridization experiments?

Lungs are made up of air-filled sacs the alveoli. They do not collapse even after forceful expiration, because of:

In Bougainvillea thorns are the modifications of

During DNA replication, Okazaki fragments are used to elongate

Which of the following options gives the correct sequence of events during mitosis?

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?