NEET Zoology Questions

Among the following, the essential amino acid is

Most common types of secondary structures of proteins are

Amino acids generally exist in the form of Zwitter ions. This means they contain

Animals possess various type of symmetry, select the correctly matched:

Match column I with column II and select the correct option from the given codes.

Somatic neural system and autonomic neural system are the two divisions of

A chronic disorder caused due to excessive cigarette smoking and damage to walls of alveoli resulting in reduced surface area for exchange of gases is called

Which one of the following invertebrates is a protostomic, bilateral symmetric and pseudocoelomate:

Select the incorrect match.

Which substances are reabsorbed actively in nephron?

Select the group of organism given below those have diploblastic members only:

Given below are four statements:

Read the following statements and select the correct option. A. If a country has small number of pre reproductive individuals followed by a large number of reproductive individuals then it shows negative growth. B. Bell shaped pyramid shows stable growth.

In the given food chain maximum energy is present at which trophic level?

Which of the following are included in barrier method?

Select the correct match w.r.t. different methods of contraception.

Choose the reversible reaction of glycolysis from the following.

Choose the incorrect statement. (1) Basophils secrete histamine, serotonin, heparin and are involved in inflammatory reactions (2) Eosinophils resist infections and are associated with allergic reactions (3) Megakaryocytes are cell fragments responsible for immune responses of the body (4) Neutrophils and monocytes are phagocytic in nature

Alfred Hershey and Martha Chase provided the unequivocal proof that DNA is the genetic material while working with:

The correct set for porifera is :

Read the following statement having two blanks A and B. In cockroach, a ring of 6-8 blind tubules called (A) is present at the junction of foregut and midgut while at the junction of midgut and hindgut a ring of 100-150 yellow coloured thin filamentous (B) is present. The one correct option that fills the two blanks is

Which part of nephron is not situated in the cortical region of the kidney?

Which of the following is not observed during contraction of a muscle fibre? (1) A bands retain the length (2) Shortening of sarcomere (3) I band gets reduced (4) H zone retains the length

Select the correct option w.r.t. frogs.

The carbon dioxide is transported via blood to lungs mostly

Transmission of a nerve impulse across is very similar to impulse conduction along a single axon.

In micro injection :

Which among the given hormones would enter the target cell and interact with intracellular receptors to exert its function? (1) Insulin (2) Glucagon (3) Testosterone (4) Epinephrine

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?

Consider the following statements. Statement (A): The malignant malaria is caused by Plasmodium falciparum. Statement (B): The malarial parasite reproduces sexually in the liver cells, bursting the cells and releasing sporozoites into the blood. In the light of above statements, select the correct option.

Select the incorrect match from the following.

Which of the following statements is true about RBCs in humans?

Condensation of chromosomes occurs in

Triploblastic, metamerically segmented, dioecious and coelomate animals are

A female with normal vision whose father was colourblind is married to normal male. What is the probability of female child being a carrier of colour blindness?

Select the incorrect match w.r.t. hormone, its source gland and function. (1) Hormone-Melatonin, Source-Pineal gland, Function – Regulates diurnal rhythm (2) Hormone-Thyroxin, Source-Thyroid gland, Function-Regulates basal metabolic rate (3) Hormone-Insulin, Source-Pancreas, Function-Regulates blood glucose level (4) Hormone-CCK, Source-Gastro-intestinal tract, Function-Stimulates secretion of pancreatic enzymes and release of bile juice from gall bladder

Identify the incorrect statement. (1) DNA is wrapped around the histone octamer to form a structure called nucleosome. (2) Nucleosomes constitute the repeating unit of a structure in nucleus called chromatin. (3) The nucleosomes in chromatin are seen as 'beads-on-string' structure when viewed under compound microscope. (4) Chromatin is thread-like stained (coloured) bodies seen in nucleus.

Incorrect statement w.r.t human reproduction is (1) Capacitation occurs in female reproductive tract. (2) Fertilization is feasible if both sperm and ovum are transported simultaneously to the ampullary region of fallopian tube. (3) Circulating levels of estrogen and progesterone in females regulates the changes in GnRH pulse frequency. (4) In females, meiosis-I completes at the time of birth.

All of the following statements are correct w.r.t. periodic abstinence, except

Which of the following groups contains uricotelic animals only?

Select the incorrect pair w.r.t. Lac operon.

The partial pressure of oxygen and carbon dioxide in vena cavae are respectively

Which of the following is correct w.r.t. an adult human under normal physiological conditions?

Which of the following is an example of amoeboid protozoans?

Match the abnormal conditions given in Column I with their explanations given in Column II and choose the correct option.

Match the phylum given in column - I with their example given in column - II and choose the correct option.

Choose the incorrect statement w.r.t. oxyhaemoglobin. (1) It dissociates near tissues due to increase in acidity (2) The capacity of 1 g of haemoglobin to combine with O₂ is 1.34 ml (3) Its concentration is increased during carbon monoxide poisoning (4) The oxyhaemoglobin dissociation curve is sigmoid in shape

Mortality refers to

Respiratory quotient (RQ) value of protein is

Select the correct statement w.r.t. immunity in higher vertebrates.