List of top Questions asked in NEET (UG)- 2022

The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome?

Hydrocolloid carrageen is obtained from

Amongst the following which one will have maximum 'lone pair- lone pair' electron repulsions?

Identify the correct set of statements:

The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea
Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin
Stem is flattened and fleshy on Opuntia and modified to perform the function of leaves
Rhizophora shows vertically upward growing roots that help to get oxygen for respiration
Subaerially growing stems in grasses and strawberry help in vegetative propagation

Choose the correct answer from the options given below:

Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is:

Which of the following is a correct statement?

Select the incorrect statement with respect to acquired immunity:

If ‘8’ Drosophila in a laboratory population of ‘80’ died during a week, the death rate in the population is__ individuals per Drosophila per week.

Match list I with list II with respect to methods of contraception and their respective actions. Choose the correct answer from the options given below:

	List - I		List - II
(a)	Diaphragms	(i)	Inhibit ovulation and Implantation
(b)	Contraception	(ii)	Increase phagocytosis of sperm within Pills Uterus
(c)	Intrauterine Devices	(iii)	Absences of Menstrual cycle and ovulation following partition
(d)	Lactational Amenorrhea	(iv)	They cover the cervix blocking the entry of sperms

Which one of the following never occurs during mitotic cell division?

Which of the following is not a desirable feature of a cloning vector?

The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.

It is also called early wood.
In the spring season cambium produces xylem elements with narrow vessels.
It is lighter in colour.
The springwood along with autumnwood shows alternate concentric rings forming annual rings.
It has lower density

Choose the correct answer from the options given below:

Tegmina in cockroach arises from

The process of translation of mRNA to proteins begins as soon as:

Match List - I with List - II. Choose the correct answer from the options given below:

	List - I		List - II
(a)	Manganese	(i)	Activates the enzyme catalase
(b)	Magnesium	(ii)	Required for pollen germination
(c)	Boron	(iii)	Activates enzymes of respiration
(d)	Iron	(iv)	Functions in splitting of water during photosynthesis

Read the following statements on lipids and find out correct set of statements:

Lecithin found in the plasma membrane is a glycolipids
Saturated fatty acids possess one or more c = c bonds
Gingely oil has lower melting point, hence remains as oil in winter
Lipids are generally insoluble in water but soluble in some organic solvents
When fatty acid is esterified with glycerol, monoglycerides are formed.

Choose the correct answer from the options given below

Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?

It results in the formation of haploid gametes
Differentiation of gamete occurs after the completion of meiosis
Meiosis occurs continuously in a mitotically dividing stem cell population
It is controlled by the Luteinizing hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary
It is initiated at puberty

Choose the most appropriate answer from the options given below:

At which stage of life the oogenesis process is initiated?

Given below are two statements:
Statement I: The release of sperms into the seminiferous tubules is called spermiation.
Statement II: Spermiogenesis is the process of formation of sperms from spermatogonia.
In the light of the above statements, choose the most appropriate answer from the options given below:

An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1, 2, 3 and 4 is: