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Biology (Medical Entrance) - 6

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The major function of cerebellum is the reflex control of

  1. cardiac muscles

  2. skeletal muscles

  3. visceral muscles

  4. sensory organs


Correct Option: B
Explanation:

The major function of cerebellum is the reflex control of skeletal muscles.  

Echolocation is found in

  1. squirrel

  2. rat

  3. cat

  4. bat


Correct Option: D
Explanation:

Bats detect enemy or prey by producing ultrsonic sound. This process is called echolocation.

The hormone responsible for the development and maintenance of secondary sexual characters in male is

  1. testosterone

  2. estrogen

  3. parathormone

  4. progesterone


Correct Option: A
Explanation:

The hormone responsible for the  development and maintenance of secondary sexual characters in male is testosterone.

Mitochondria of a sperm occur in its

  1. tail

  2. head

  3. acrosome

  4. middle piece


Correct Option: D
Explanation:

Mitochondria of a sperm occur in its middle piece.

Which cell organelle is associated with acrosome formation?

  1. Mitochondria

  2. Ribosome

  3. Golgi body

  4. Centriole


Correct Option: C
Explanation:

Acrosome of sperm is formed from golgi body.

Portuguese man o' war or physalia is a

  1. colonial monomorphic coeleterate

  2. polymorphic coelentrate

  3. coral

  4. ctenophore


Correct Option: B
Explanation:

Portuguese man o' war or physalia is a polymorphic coelentrate.

Which of the following is a free-living freshwater flatworm?

  1. Planaria

  2. Schistosoma

  3. Fasciola

  4. Taenia


Correct Option: A
Explanation:

Planaria is a free-living flatworm.

The photosensitive cells, rods and cones are located in

  1. iris

  2. choroid

  3. retina

  4. sclera


Correct Option: C
Explanation:

The photosensitive cells, rods and cones are located in the retina.

Syncytial epidermis is found in

  1. liverfluke

  2. tape worm

  3. ascaris

  4. earthworm


Correct Option: C
Explanation:

Syncitial epidermis is found in aschelminthes like ascaris.

Book gills are associated with

  1. excretion

  2. respiration

  3. nutrition

  4. digestion


Correct Option: B
Explanation:

Book gills are respiratory organs in limulus or king crab.

Fats are richly found in

  1. areolar tissue

  2. adipose tissue

  3. lymph glands

  4. tendon


Correct Option: B
Explanation:

Fats are richly found in adipose tissue, which have fat storing adipocytes.

Larva of filarial worm microfilariae is carried by

  1. sandfly

  2. culex mosquito

  3. anopheles mosquito

  4. housefly


Correct Option: B
Explanation:

Culex mosquito is the vector of filariasis.

Which one of the following gases is present today, but was absent about 3.5 billion years ago?

  1. Nitrogen

  2. Hydrogen

  3. Methane

  4. Oxygen


Correct Option: D
Explanation:

Oxygen is present today, but was absent about 3.5 billion years ago.

Bidder’s canal is found in

  1. kidney of mammal

  2. testis of frog

  3. kidney of frog

  4. ovary of mammal


Correct Option: C
Explanation:

Bidder’s canal is found in kidney of frog.

Total number of chromosomes in Drosophila is

  1. 2 pair

  2. 3 pair

  3. 4 pair

  4. 8 pair


Correct Option: C
Explanation:

Drosophila has 3 pairs of autosome and 1 pair of allosome.

Which of the following is a steroid?

  1. Thyroxine

  2. Insulin

  3. Adrenalin

  4. Cortisol


Correct Option: D
Explanation:

Cortisol is a steroid.

The process of the formation of different genotype in a new settlement, when a small group of population found new settlement, is called

  1. Bottleneck effect

  2. Founder effect

  3. Mutation

  4. Genetic drift


Correct Option: B
Explanation:

Formation of different  genotype in new settlement, when a small group of population found new settlement, is known as founder effect.

The part of the brain which acts as a relay centre is

  1. hypothalamus

  2. pineal

  3. thalamus

  4. hippocampus


Correct Option: C
Explanation:

Thalamus is the relay centre of brain.

Which of the following hormones is not secreted by the anterior pituitary gland?

  1. Luteinizing hormone

  2. Growth hormone

  3. Testosterone

  4. Follicle-stimulating hormone


Correct Option: C
Explanation:

 Testosterone is secreted by the adrenal gland.

The vitamin which helps in the clotting of blood is

  1. vitamin-A

  2. vitamin-C

  3. vitamin-K

  4. vitamin-D


Correct Option: C
Explanation:

Vitamin K helps in the clotting of blood.

Protein present in cartilage is

  1. cartilagin

  2. ossein

  3. chondrin

  4. chitin


Correct Option: C
Explanation:

Chondrin is a protein found in cartilage.

Which of the following is a correct set of vestigial organs?

  1. Ileo-caecal valve of man, wings of birds and caudal fins of fish

  2. Patygium of bats, scales of snakes and carapace of turtles

  3. Nails of man, premolar of man and ileum of all vertebrates

  4. Wings of kiwi, splint bone of horse and hind limbs of python


Correct Option: D
Explanation:

Wings of kiwi, splint bone of horse and hind limbs of python are vestigial organs.

The type of epithelium which lines the inner surface of fallopian tubes, bronchioles and small bronchi is known as

  1. squamous epithelium

  2. columnar epithelium

  3. ciliated epithelium

  4. cubical epithelium


Correct Option: C
Explanation:

The type of epithelium which lines the inner surfaces of fallopian tubes, bronchioles and small bronchi is known as ciliated epithelium.

Frog's tadpole is

  1. uricotelic

  2. ammonotelic

  3. ureotelic

  4. aminotelic


Correct Option: B
Explanation:

Frog's tadpole is ammonotelic.

Pneumotaxic centre associated with breathing is found in

  1. hypothalamus

  2. cerebrum

  3. cerebellum

  4. pons


Correct Option: D
Explanation:

Pneumotaxic centre associated with breathing is found in pons.

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