List of top Biology Questions

The sequence of communities of primary succession in water is:
(A) Phytoplanktons → Scrubs → Free floating hydrophytes → Rooted hydrophytes → Grasses → Trees.
(B) Phytoplanktons → Free floating hydrophytes → Rooted hydrophytes → Trees → Scrubs.
(C) Free floating hydrophytes → Scrubs → Phytoplanktons → Rooted hydrophytes → Grasses → Trees.
(D) Phytoplanktons → Rooted hydrophytes → Free floating hydrophytes → Reed swamps → Marsh meadows → Scrubs → Trees.

Who discovered DNA?

Which of the following best describes sympatric speciation?

Between which among the following, the relationship is not an example of common symbiosis?

The natural reservoir of phosphorus is:

Which of these enzymes is required to cleave a plasmid?

Select the correct statement from the following:

How do most arthropods circulate nutrients and gases throughout their bodies?

The chemical substances produced by some microbes which can kill or retard the growth of other microbes are known as:

What is the movement of cytoplasm within a cell called?

Assertion: Insects are important pollinators for many flowering plants. Reasoning: Insects visit flowers to obtain nectar or pollen, and in the process, they inadvertently transfer pollen from one flower to another, facilitating cross-pollination.

Match the nutrients given in List-I with the source in List-II:

List-I		List-II
1	Vitamin A	p	Bitter gourd
2	Single cell protein	q	Beans
3	Vitamin C	r	Carrots
4	Protein	s	Spirulina spp

Choose the correct option from the following :

To increase wool production and to improve the quality of wool, the bacterial genes concerned with biosynthesis of cysteine amino acids involved in formation of keratin protein found in wool are cloned and introduced in sheep.

Identify the bacterial disease among the following:

Which of the following terms describes the normal type of chromosome arrangement where an organism has the correct number of chromosomes?

Mule is the result of:

Which of the following best describes the sympathetic pathway's effect on the glomerulus in the kidney?

Which region of the brain plays a crucial role in regulating glomerular filtrate by influencing the release of hormones involved in kidney function?

Read the following statements:
Statement I: Morphine is obtained by acetylation of Heroin.
Statement II: Cannabinoids are known for their effect on the cardiovascular system.
Which of the following options is correct with reference to these statements?

Which of the following structures in the kidney is primarily responsible for the reabsorption of water and solutes from the filtrate?

Which of the following hormones plays a key role in kidney osmoregulation by promoting water reabsorption in the collecting ducts?

What is the approximate size range of lymphocytes, a type of white blood cell?

The genome of HIV replicates in the macrophages with the help of an enzyme called:

The principle of vaccination is based on which property of the immune system?