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Entrance Test Biology

Description: Test Papers and Notes for Class XII, Biology, Medical Entrance, Entrance Exams, Respiration, CBSC Biology, Class XI, CBSE XII, Class XII Biology, Class XI Biology, PMT, AIPMT, AIIMS, Reproduction, Reproduction System, Skeleton, Skeleton System
Number of Questions: 25
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Tags: Medical Entrance Engineering Entrance Class XII Biology CBSE XII Biology Entrance Exams Respiration CBSC Biology Class XI Class XII Class XI Biology PMT AIPMT AIIMS Reproduction Reproduction System Skeleton Skeleton System Biology
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Transition zone between two-vegetation types of regions is named

  1. ecotone

  2. ecodine

  3. ecosystem

  4. ecotype


Correct Option: A

Nitrogen fixation is related to change of

  1. N2 into NH3

  2. N2 into nitrates

  3. N2 into amino acid

  4. None of these


Correct Option: C

Non-legume nitrogen fixing organism belongs to genus

  1. rhizobium

  2. mycobacterium

  3. clostridium

  4. azotobacter


Correct Option: D

Sieve tube is a part of

  1. xylem

  2. phloem

  3. xylem and phloem

  4. none of these


Correct Option: A

Plant growth regulator ethylene is used:

  1. for slowing down the ripening of apples

  2. for speeding up the ripening of fruits

  3. as a saturated hydrocarbon

  4. for retarding the ripening of tomatoes


Correct Option: B

The sausage tree (Kigelia pinnata) is pollinated by

  1. bat

  2. bird

  3. insect

  4. all of the above


Correct Option: D

Pure cellulose is obtained from _______ of cotton.

  1. root hair

  2. stem hair

  3. leaf hair

  4. seed hair


Correct Option: D

Algae are important for human beings because

  1. they can be turned to important diet in future

  2. they purify atmosphere

  3. both 1 and 2

  4. none of these


Correct Option: C

The bone marrow is composed of

  1. muscle fibre and adipose tissue

  2. areolar tissue and adipose tissue

  3. adipose tissue and calcified cartilage

  4. adipose tissue areolar tissue and blood vessels


Correct Option: B

Which layer of the wall of blood vessel is made up of circular smooth muscles?

  1. Outer

  2. Middle

  3. Inner

  4. Both (1) and (2)


Correct Option: B

The Broca's area and Wernicke's centre are the association area situated in cerebrum. These are associated with

  1. voluntary action

  2. blind spot

  3. memory

  4. none of these


Correct Option: A

The number of molecules of fatty acids present in one molecule of fat is

  1. one

  2. two

  3. three

  4. four


Correct Option: A

Which of the following value is required for enzyme reaction?

  1. Low Km value

  2. High Km value

  3. Low Ki value

  4. High Ki value


Correct Option: A

Which type of cleavage is exhibited by reptiles?

  1. Discoidal

  2. Radial

  3. Spinnal

  4. Superficial


Correct Option: A

A major application of embryo culture is in

  1. clonal propagation

  2. induction of somaclonal variations

  3. overcoming hybridization barriers

  4. production of embrayoids


Correct Option: C

Divisions in frog's egg is

  1. holoblastic

  2. meroblastic

  3. diploblastic

  4. triploblastic


Correct Option: A

The development of sporophyte from gametophyte without fertilization is called

  1. apomixis

  2. apogamy

  3. apospory

  4. parthenogenesis


Correct Option: B

Squeezing of Leucocytes out from the capillary wall to fight foreign agents is known as

  1. diapedesis

  2. diapanse

  3. diaphysis

  4. diakinesis


Correct Option: A

Agranulocytes are

  1. eosionophills

  2. neutrophills

  3. basophills

  4. monocytes


Correct Option: D

A National Park provides protection to:

  1. fauna only

  2. flora only

  3. flora and fauna

  4. entire system


Correct Option: A

The poisonous substance released because of rupturing of schizont in RBC of Malaria patient is

  1. hematin

  2. hemoglobin

  3. hemozoin

  4. heam


Correct Option: C

The gene pool of a population tends to remain stable if certain conditions are met. These conditions include large populations, no mutation, no migration and

  1. random mating

  2. natural selection

  3. reduction of predators

  4. moderate environmental changes


Correct Option: A

The youngest layer of secondary xylem in the wood of dicot plant is located between

  1. pith and primary xylem

  2. just out side vascular cambium

  3. just inside vascular cambium

  4. just inside cork cambium


Correct Option: C

Biogas can be a good substitute for

  1. natural gas

  2. petroleum and diesel

  3. coal and charcoal

  4. all of these


Correct Option: D
Explanation:

compressed biogas is a potential substitute of even petrol and diesel.

The leaf of Mimosa on touching becomes flaccid and drops down. This is because

  1. cells of pulvini lose their turgor

  2. cells of abaxial surface shrink

  3. witing of cells take place due to excess water loss

  4. none of these


Correct Option: A
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