AIIMS Biology Mock Test - 6 - NEET MCQ

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Light is very important external factor of transpiration.
Reason(R): Light induces stomatal opening and darkness stomatal closure. Thus the rate of transpiration increased in light and decreases in dark.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Study of biology requires basic knowledge of chemistry and physics.
Reason(R): Living organisms are made up of atoms and molecules which follow chemical and physical laws.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Retenone is an extremely toxic insecticide.
Resaon (R): Retenone interrupts electron transport chain in the cells of insect body.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Chromosomal aberrations are caused by a break in the chromosome or its chromatid.
Reason(R): Duplication, deficiency, transversion and translocations are the result of chromosomal aberrations.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): High concentration of auxin inhibits root and shoot growth.
Reason (R): Ethylene is produced in high auxin concentration.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Cattle breeds can be improved by superovulation and embryo transplantation.
Reason(R): Superovulation in high milk-yielding cows is induced by hormonal injection.

In the following questions, a statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the statements carefully and mark the answer-
Assertion (A): Lysosomes show stability in the living cell.
Reason (R): Lysosomal membrane is not digested by the lysosomal enzymes

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Ginger has a prostrate growing rhizome.
Reason (R): Shoot growth is not affected by gravity.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Use of fertilizers greatly enhances crop productivity.
Reason(R): Irrigation is very important in increasing crop productivity.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Cytokinins are antisenescent.
Reason (R): Effect of cytokinins is antagonistic of ethylene.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Pollution is always caused by human activites.
Reason(R): Pollution is not different from contamination.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Flower of racemose inflorescence are pollinated by insects.
Reason (R): In racemose head inflorescence, the floretes are arranged in a centripetal fashion.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): In caducous plants, leaves are never formed.
Reason (R): In deciduous plants, all leaves fall together.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Soil particles, particularly clay and organic matter in soil, contain negative charges that attract positively-charged ions such as Ca⁺⁺, K⁺ and Mg⁺⁺.
Reason(R): This attraction keeps these ions at a soil level where they are available to plants.

In the following questions, a statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the statements carefully and mark the answer-
Assertion (A): Smooth endoplasmic reticulum is also called a granular endoplasmic reticulum.
Reason (R): SER contains ribophorins.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Agricultural output increased several tims after introduction of DDT.
Reason(R): DDT was the first insecticide used on a wide scale.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Thick cuticle is mostly present in disease resistant plants.
Reason(R): Disease causing agents cannot grow on cuticle and cannot invade the cuticle.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Primary cambium is a lateral meristem.
Reason (R): Cork cambium is the secondary meristem.

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Fruit juices taste bitter on being kept for some time.
Reason(R): Microorgnisms of the air spoil it quickely.

Polymer of α-D glucose is

The highest blood pressure in the aorta occurs when the

In eukaryotes the electron transport chain and enzymes of Krebs' or TCA cycle are found in-

The following areas contain tonsils except which one?

Which ratio is constant for DNA ?

The product of hybridization is known as

Which of the following plant seeds is used as jeweller's weight?

In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Gram-negative bacteria do not retain the stain when washed with alcohol.
Reason(R): The outer face of the outer membrane of Gram-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.