List of top Biology Questions asked in KCET

Which of the following contraceptives could be effective in avoiding pregnancy if used within 72 hours after casual unprotected intercourse?

In apple, the chromosome number of gametes is 17. What is the chromosome number in its Primary Endosperm Nucleus (PEN)?

Match the digestive glands given in Column-I with their respective enzymes given in Column-II and choose the correct combination from
the given options.

Column-I		Column-II
1	Pancreas	p	Pepsin
2	Gastric glands	q	Enterokinase
3	Small intestine	r	Ptyalin
4	Salivary glands	s	Trypsin

Choose the correct options :

Match the different types of Leucocytes (Column-I) with their percentage of occurrence (Column-II) in a healthy adult human and choose the correct answer.

Column-I		Column-II
1	Neutrophils	(p)	6-8%
2	Lymphocytes	(q)	60-65%
3	Monocytes	(r)	0.5-1%
4	Basophils	(s)	2-3%
5	Eosinophils	(t)	20-25%

Choose the correct options :

The deficiency of which of these elements interrupts photolysis of water during photosynthesis?

A girl after attaining sexual maturity shows development of growing ovarian follicles, development of mammary glands and high pitch of voice. These changes are attributed to ______ hormones.

The element whose percentage weight is highest in both earth's crust and human body is

Identify the event in meiosis mediated by the enzyme recombinase.

In the below diagram, identify the part which connects the peripheral microtubules to the central sheath.

Ruminant animals can digest cellulose in their food, where as human beings are unable to do so. This is because

In $C_4$ plants, $C_3$ cycle takes place in

Which among the following was the biggest land dinosaur?

Consider the following statements i, ii and iii regarding criteria for essentiality of the nutrients in plants: i. The presence of elements is must for plants to complete their life cycle. ii. The role of the element can be replaced by another element. iii. The element must be directly involved in the metabolism of the plant. Choose the correct statement/s :

According to Human Genome Project (HGP), the total number of genes in human genome is estimated at 30,000 the number of genes present on Y-chromosome are

Identify the asexual reproductive structure ?M? in the following diagram:

Identify the cells represent as P, Q, R and S in the given schematic representation of spermatogenesis.

In blind spot of the human eye

Choose the correct statement from the following:

A man was suffering from mental illness like depression and insomnia. Identify the drug which is normally used as medicine in such cases.

A person shows symptoms like Sneezing, Watery eyes, running nose and difficulty in breathing, on exposure to certain substances in air. Which type of antibody is produced during such condition?

Cells in the quiescent stage $(G_0)$

Which of the following protozoan parasites causes sleeping sickness?

The nourishing cells in the Seminiferous tubules are

Testa and Tegmen of the seed coat represent

Of the total incident solar radiation the percentage Photosynthetically Active Radiation (PAR) captured by the plants