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Biology Test

Description: This test is based on certain topics from biology which are highly beneficial for learning aspirants.
Number of Questions: 25
Created by:
Tags: Thyroid gland thymus gland hypothalamus endocrine etc. Hormones Endocrine Glands and Hormones Pituitary Gland The Pituitary Gland Spermatogenesis Embryogenesis Embryonic Development
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Which of the following is the most anteriorly placed structure in the female perineum?

  1. Mons pubis

  2. Vaginal orifice

  3. Inner lips

  4. Clitoris


Correct Option: A
Explanation:

It is the soft mound of flesh raised above the genitals by a pad of fat under the skin that protects the pubic bone.

What are the cysts containing sticky gel-like substance in an ovary called?

  1. Endometriomas

  2. Cystadenomas

  3. Dermoid

  4. Polycystic


Correct Option: B
Explanation:

These cysts form from cells on the outer surface of the ovary. 

Which of the following female reproductive organs is homologouos to penis in males?

  1. Labia majora

  2. Labia minora

  3. Clitoris

  4. Mons pubis


Correct Option: C
Explanation:

The clitoris is an erectile tissue like the penis.

The paramesonephric ducts in the foetus develop to form

  1. uterus and cervix

  2. seminal vesicles

  3. testicles

  4. ovary


Correct Option: A
Explanation:

Paramesonephric ducts are paired ducts of the developing foetus that run down the lateral sides of the urogenital ridge. In females, they develop to form fallopian tubes, uterus, cervix and the upper two-thirds of vagina.

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following cysts often resolves itself in a few months?

  1. Follicle cyst

  2. Ectopic pregnancy

  3. Vaginitis

  4. Cervical cancer


Correct Option: A
Explanation:

It happens when the the sac holding the egg does not break open to release the egg, and the fluid filled sac continues to grow. This type of cyst will often resolve itself in a few months.

The general adaptation syndrome is stimulated by

  1. adrenal gland

  2. hypothalamus

  3. pituitary gland

  4. thyroid gland


Correct Option: B
Explanation:

General adaptation syndrome describes the body's short-term and long-term reactions towards stress. It is stimulated by hypothalamus of the brain.

Which of the following hormones does not act via. a second messenger system?

  1. Glucagon

  2. Epinephrine

  3. Growth hormone

  4. Testosterone


Correct Option: D
Explanation:

It is a steroid hormone from the androgen group that is primarily secreted in the testes. It is the principal male sex hormone and is largely responsible for male growth and development. It does not act via. a second messenger system.

Which of the following hormones is NOT an amino acid derivative?

  1. Epinephrine

  2. Norepinephrine

  3. Melanin

  4. Testosterone


Correct Option: D
Explanation:

It is a steroid hormone found in mammals, reptiles, birds, and other vertebrates.

The activation of adenylcyclase results in

  1. formation of cAMP

  2. breakdown of cAMP

  3. G-proteins binding to cAMP

  4. entry of steroid hormones into the cell


Correct Option: A
Explanation:

Adenylyl cyclase is an enzyme that synthesizes cyclic adenosine monophosphate or cyclic AMP from adenosine triphosphate (ATP).

Which of the following hypophyseal structures gets signals from the hypothalamus by the virtue of the hypophyseal portal vein?

  1. Neurohypophysis

  2. Pars intermedia

  3. Adenohypohysis

  4. Pars nervosa


Correct Option: C
Explanation:

The adenohypohysis is that portion of the gland that comes from the gut, i.e. it is epithelial in nature. It receives signals from the hypothalamus by the virtue of the hypophyseal portal vein.

A man ate 50 sugar cubes and then drank a half litre of aerated drink, which hormone might be secreted in large amount as a consequence?

  1. Insulin

  2. Glucagon

  3. Somastinin

  4. Cortisol


Correct Option: A
Explanation:

Since insulin lowers blood glucose level so it must be secreted in large amount. It is released by the pancreas for regulating carbohydrate and fat metabolism in the body.

Another name for a nocturnal emission is

  1. wet dream

  2. ejaculation

  3. menstruation

  4. bedwetting


Correct Option: A
Explanation:

The scientific term for a wet dream, i.e. cumming during the sleep. It involves ejaculation during sleep for a male.

Which of the following glands helps in onsetting puberty?

  1. Thyroid gland

  2. Pineal body

  3. Adrenal gland

  4. Pituitary gland


Correct Option: D
Explanation:

The pituitary gland is about the size of a pea. It is a protrusion off the bottom of the hypothalamus at the base of the brain. Hormones secreted from the pituitary gland help to get puberty started in humans.

In an individual, a decline in insulin hormone receptors on cells may cause

  1. diabetes insipidus

  2. type I diabetes mellitus

  3. type II diabetes mellitus

  4. gestational diabetes


Correct Option: C
Explanation:

Type II diabetes mellitus is caused due to insulin resistance primarily within the muscles and fat tissue and inadequate insulin production from the beta cells of pancreas.

What is the fluid filled bubble called that surrounds the baby while it is growing inside the mother?

  1. Amnion

  2. Amniotic sac

  3. Yolk sac

  4. Chorionic cavity


Correct Option: B
Explanation:

It is the bag like structure where the fetus develops in amniotes. It is a tough but thin transparent pair of membrane, which hold a developing embryo until shortly before birth.

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

  1. Prolactin

  2. Thyrotropin

  3. Corticotropin

  4. Androgens


Correct Option: D
Explanation:

Male gonads, or testes, secrete hormones called androgens, the most important of which is testosterone. These hormones regulate body changes associated with sexual development, including enlargement of the penis, the growth spurt that occurs during puberty.

The structure meant only for sexual pleasure is

  1. vulva

  2. labia

  3. clitoris

  4. fallopian tubes


Correct Option: C
Explanation:

A small organ located near the opening of the vagina is a sensitive site of sexual excitement. Its only purpose is sexual pleasure.

Mr. X is suffering from low blood glucose level. This condition will typically result in the secretion of all of the following, EXCEPT:

  1. Glucagon

  2. Thyroxine

  3. Human growth hormone (HGH)

  4. Parathyroid hormone (PTH)


Correct Option: D
Explanation:

It is secreted by the chief cells of the parathyroid glands. It increases the concentration of calcium in the blood.

The sexual glands in females secreting estrogen and progesterone is

  1. vagina

  2. uterus

  3. ovaries

  4. cervix


Correct Option: C
Explanation:

The sexual glands of the female produce the hormones; estrogen and progesterone, and in which the ova is developed. Differences include erratic cycles, release more than one egg, and ovarian cysts.

A barrier between sperm cells and the circulatory system is formed by

  1. sustentacular cells

  2. interstitial cells

  3. ductus deferens

  4. epididymis


Correct Option: A
Explanation:

These cells assist with sperm development provide a protective environment, and create a barrier between sperm cells and the circulatory system.

'Khatna' is the common practice as per Islamic rite.The scientific term used for it is

  1. circumcision

  2. ejaculation

  3. nocturnal emissions

  4. orchitis


Correct Option: A
Explanation:

It is the surgical removal of the foreskin or prepuce in males. In arabic, it is known as 'Khatna'.

Which of the following birth control processes involves refrain from participating in sexual intercourse?

  1. Norplant

  2. Diaphragm

  3. Abstinence

  4. IUD


Correct Option: C
Explanation:

The most effective form of birth control is to simply refrain form participating in sexual intercourse. If you don't have sex, then you won't get pregnant.

Infection of the testis in males is known as

  1. hematospermia

  2. testisitis

  3. orchitis

  4. otitis media


Correct Option: C
Explanation:

It is the inflammation of one or both testes. It may be caused by sexually transmitted diseases (STD), such as gonorrhea or chlamydia.

What is the term used for the external female genetilia?

  1. Perineum

  2. Vulva

  3. Mons pubis

  4. Mammary glands


Correct Option: B
Explanation:

The female external genitalia are collectively known as the vulva or pudendum. They consist of paired folds called the labia majora, which are thickly padded with subcutaneous fat, covered by skin and pubic hair, and have a moist internal lining.

Among the following ---------------------- accommodate a primary oocyte and several layers of follicle cells.

  1. primordial follicles

  2. primary follicle

  3. secondary follicle

  4. vesicular follicle


Correct Option: A
Explanation:

Primordial follicles are indiscernible to the naked eye. However, these eventually develop into primary, secondary and tertiary vesicular follicles.They accommodate a primary oocyte and several layers of follicle cells.

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