Free MCQs & Online Quiz Practice for Exams

Q: The decrease in response to repeated or continuous stimulation is called

A) Instinct

B) Maturation

C) Habituation

D) Imprinting

Q: Identify the type of behaviour which uses cognitive or mental processes to associate experiences for solving problems?

A) Instinct

B) Maturation

C) Habituation

D) Insight

Q: Type of behaviour in which one animal is aggressive or attacks another animal and the other responds by returning the aggression or submitting is

A) Agnostic

B) Territory

C) Hierarchy

D) None of these

Q: Trial and error learning has no role in

A) Operant Learning

B) Classical Conditioning

C) Insight

D) Imprinting

Q: Which of the following enzyme released by the sperm.

A) Hyaluronidase

B) Trypsin

C) Helicase

D) Pepsin

Q: Which of the following organelle that helps the sperm to penetrate the ovum.

A) Acrosome

B) Zona pellucida

C) Megalis

D) Tail

Q: The hormone that is released from the testesis_____________.

A) Progesterone

B) Vasopressin

C) Testosterone

D) Thyroxin

Q: After fertilization the zygote goes through a rapid period of cell divisions called

A) Implantation

B) Organogenesis

C) Blastulation

D) Cleavage

Q: The process that transforms the embryo into a three-layered stage is

A) Sedimentation

B) Blastulation

C) Cleavage

D) Gastrulation

Q: Which of the following structures is formed from ectodermal tissues?

A) Brain

B) Muscles

C) Skeleton

D) Bones

Q: Which of the following is NOT a function of the placenta?

A) Respiratory gas transfer

B) Urine formation

C) Hormone production

D) Nutrient transfer

Q: The hormone that induces labour and controls labour via a positive feedback mechanism is

A) Oxytocin

B) Progesterone

C) Estrogen

D) ADH

Q: Prolactin causes_____________________________________________

A) Myometrial contractions and milk let-down

B) Uterine contractions only

C) Milk production by the breast tissue

D) Increased thyroxin excretion during the first month of pregnancy

Q: The pattern of sex determination found in Drosophila is

A) WZ-ZZ type

B) XY-XX

C) X0-XX

D) Compound sex

Q: Which of the following is male in grasshopper?

A) XX

B) XY

C) X

D) Y

Q: The female in butterflies is

A) XX

B) XY

C) X0

D) X

Q: Which of the following is true for Drosophila sex determination?

A) Males are produced by presence of Y chromosome

B) Females are produced by presence of Y chromosome

C) Two X chromosomes will always produce a female

D) Two Y chromosomes will always produce a male

Q: Sex-linked genetically inherited traits

A) can appear in both males and females

B) are only found in males

C) are only found in females

D) are found on autosomes

Q: Y-linked traits are inherited

A) only by females

B) only by males

C) by both males and females

D) but not expressed

Q: Harmful X-linked traits are

A) inherited only from mothers

B) more numerous than Y-linked ones

C) most likely to show up in the phenotype of daughters

D) most likely to show up in the phenotype of sons