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CET Biology 2

Description: Get Both objective and subjective Questions to prepare for Medical Entrance, Class XI, Class XII, CCE Biology, Class XI Biology, Class XII Biology, CET Biology, CET Preparation, CET Exam Preparation, CET Exam Covers Zoology, Botany, Biology, Science
Number of Questions: 35
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Tags: Medical Entrance Class XI Class XII CCE Biology Class XI Biology Class XII Biology CET Biology CET Preparation CET Exam Preparation CET Exam Science Biology Botany Zoology Conduction of Nerve Impulse Generation and Transmission of Nerve Impulse Central Nervous System Thyroid Thyroid Gland Types of Metabolic Wastes Types of Nitrogenous Wastes in Organisms Class-Amphibia Class Amphibia
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Trimethylamine oxide is excreted by

  1. fresh water fishes

  2. amphibians

  3. marine teleosts

  4. some molluscs and marine teleosts


Correct Option: C

In a tadpole larva of frog thyroxine is prevented to mix with blood. This would result in

  1. gigantic size of animal

  2. stunted size of animal

  3. acceleration of metamorphosis

  4. postponement of metamorphosis


Correct Option: D

Formation of fertilization membrane is a sort of defence reaction, primarily meant to

  1. prevent entrance of more than one sperm

  2. activate the egg to make it to undergo change

  3. bring change in the composition of cytoplasm

  4. induce physiological changes


Correct Option: A

The excretory substance is ammonia in

  1. camel

  2. cartilagenous fishes

  3. whale

  4. fresh water fishes


Correct Option: D

Excretion of nitrogenous waste product mainly as uric acid by birds is helpful in

  1. conserving body water

  2. conserving body heat

  3. eliminating excess body water

  4. eliminating excess body heat


Correct Option: A

Placenta, beside being an organic connection between mother and foetus, is also a/an

  1. ductless gland

  2. digestive gland

  3. excretory gland

  4. pumping organ of blood


Correct Option: A

The glucose is absent in the urine of a healthy man but it has been noted that there is more glucose in the blood entering the kidney than the blood leaving the kidney. This is because

  1. some glucose is used up in respiration of kidney cells

  2. some glucose is filtered in other form of waste products

  3. some glucose is converted into glycogen

  4. glucose is absorbed in the urinary bladder


Correct Option: A

Which of the following statements is correct?

  1. All animals require a medium for respiration.

  2. In all animals, oxygen is transported by blood.

  3. In all animals, oxygen is taken in from water or air through gills or lungs.

  4. All animals need oxygen for respiration.


Correct Option: A

Foramen of magendie is found in

  1. medulla oblongata

  2. cerebral cortex

  3. corpus striatum

  4. neuropallium


Correct Option: A
Explanation:

 Foramen of magendie is found in medulla oblongata. It drains cerebrospinal fluid (CSF) from the fourth ventricle into the cisterna magna.

Hypothyroidism in adulthood leads to

  1. cretinism

  2. Addison’s disease

  3. sterility

  4. myxoedema


Correct Option: D
Explanation:

 Hypothyroidism in adulthood leads to myxoedema. Myxoedema refers to deposition of mucopolysaccharides in the dermis, which results in swelling of the affected area.

During transmission of nerve impulse the potential of the membrane shows the following types of charges:

  1. First positive then negative and back positive.

  2. First negative then positive and back negative.

  3. First positive then negative and remain negative.

  4. First negative then positive and remain positive.


Correct Option: B

The opening which connects the lateral ventricles with third ventricle is

  1. Foramen of Monro

  2. Iter

  3. Foramen magnum

  4. Obturator foramen


Correct Option: A

Forced deep breathing for a few minutes by a person sitting at rest may be followed by the temporary cessation of breathing. This is due to

  1. too much oxygen in the blood

  2. too much CO2 in the blood

  3. very little CO2 in the blood

  4. both too much O2 and very little CO2 in the blood


Correct Option: D

Tidal volume of mammalian lungs is

  1. the total maximum air that can be drawn into lungs

  2. the air that normally goes in and comes out of the lungs during breathing

  3. the air that is left in the lungs after normal expiration

  4. the air that can be expelled out forcibly after the normal expiration


Correct Option: B

In mammals, pepsin enzyme works best at a pH which is about

  1. 1

  2. 1.8

  3. 7

  4. 8.2


Correct Option: B

Inflammatory response, in allergy, is caused by the release of

  1. Antigen

  2. Antibodies

  3. Histamines

  4. Prothrombin


Correct Option: C

Toxic substance in the diet are detoxicated in the human body by

  1. liver

  2. kidney

  3. lungs

  4. stomach


Correct Option: A

Which of the following pairs represents one and the same thing?

  1. Atrio-ventricular node − Pacemaker

  2. Corpus luteum − Yellow body

  3. Factor X − Thromboplastin Factor

  4. Mitral valve − Tricuspid valve


Correct Option: B

A pregnant human female exceretes

  1. Progesterone

  2. FSH

  3. LH

  4. hCG


Correct Option: D

Breathing centre that controls normal breathing in mammals lies in

  1. cerebrum

  2. cerebellum

  3. midbrain

  4. medulla oblongata


Correct Option: D

Which one of the following sets of organs is derived from ectoderm?

  1. Brain, spinal cord, pituitary, thyroid

  2. Brain, spinal cord, liver, pancreas

  3. Brain, spinal cord, pituitary, pineal

  4. Heart, eye, dentine, skeleton


Correct Option: C

The sensory cells associated with perception of sound in the internal ear lie in

  1. organ of corti

  2. semicircular canals

  3. endolymph

  4. perilymph


Correct Option: A

Which of the following is a group of neurotransmitter chemicals?

  1. Somatostatin, serotonin, acetylcholine

  2. Nor-adrenaline, somatostatin, threonine

  3. Glycine, dopamine, melatonin

  4. Acetylcholine, nor-adrenaline, dopamine


Correct Option: D

Which one of the following is not under the direct control of pituitary gland with respect to the regulation of its secretory function?

  1. Adrenal cortex

  2. Adrenal medulla

  3. Thyroid

  4. Testis


Correct Option: B

Consider the following statements:

Placenta present in mammals acts as an endocrine tissue and produces

(A) human chorionic gonadotrophin (B) estrogen (C) progesterone (D) testosterone

Which of the above statements are correct?

  1. Only (A) and (D)

  2. Only (A) and (C)

  3. (A), (B) and (C)

  4. (B), (C) and (D)


Correct Option: C
Explanation:

Testosterone is a steroid hormone from the androgen group and is found in humans and other vertebrates. In humans and other mammals, testosterone is secreted primarily by the testicles of males and, to a lesser extent, the ovaries of females.

Which of the following animals has a nervous system but no brain?

  1. Amoeba

  2. Earthworm

  3. Hydra

  4. Cockroach


Correct Option: C

Tendon is a structure which connects

  1. a bone with another bone

  2. a muscle with a bone

  3. a nerve with a muscle or bone

  4. a muscle with a muscle


Correct Option: B

If the red blood corpuscles are placed in distilled water, they will

  1. stick together

  2. increase in volume and burst

  3. shrink and collapse

  4. remain normal


Correct Option: B

Glucose, galactose and fructose all have the same molecular size and composition. How does their absorption take place?

  1. At the same rate.

  2. Glucose is absorbed most rapidly.

  3. Fructose is absorbed most rapidly.

  4. Galactose is absorbed most rapidly.


Correct Option: D

The common eye defect that develops in old age is

  1. myopia

  2. presbyopia

  3. astigmatism

  4. glaucoma


Correct Option: B

Which of the following is an example of conditioned reflex?

  1. Withdrawal of a hand on touching a hot plate.

  2. Watering of mouth at the smell of food.

  3. Closing of eyes on being approached by an object.

  4. Sweating while it is very hot.


Correct Option: B

Match List-I (Human hormones) with List-II (Target organ) and select the correct answer using the code given below the lists: List-I List-II Human hormone Target organ a. Cholecystokinin 1. Bone marrow b. Erythropoietin 2. Stomach c. Enterogastron 3. Gall bladder

  1. a-2, b-1, c-3

  2. a-1, b-3, c-2

  3. a-3, b-2, c-1

  4. a-3, b-1, c-2


Correct Option: D

Cerebrospinal fluid is produced by

  1. Neopallium

  2. Cerebellum

  3. Basal ganglia

  4. Choroid plexus


Correct Option: D

The acrosome of sperm is derived from

  1. Golgi bodies

  2. Mitochondria

  3. Centrosome

  4. Ribosomes


Correct Option: A

Oxygen dissociation curve shifts to right in case of presence of

  1. high CO2 concentration

  2. low CO2 concentration

  3. chemical like DPG

  4. both 1 and 3


Correct Option: D
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