Cornea transplant in humans is almost never rejected. This is because

• its cells are least penetrable by bacteria

• It has no blood supply

• It is composed of enucleated cells

• It is composed of enucleated cells

Which one of the following is a matching pair of a body feature and the animal possessing it?

• Post-anal tail   -   Octopus

• Ventral Central nervous system - Leech nervous system

• Pharyngeal gill slits absent in embryo

• Pharyngeal gill slits absent in embryo

Bowman’s glands are located in the

• proximal end of uriniferous tubules

• anterior pituitary

• female reproductive system of cockroach

• female reproductive system of cockroach

24.

Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?

• perikaryon and dendrites

• vacuoles and fibres

• flagellum and modulloary sheath

• flagellum and modulloary sheath

Ultrasound of how much frequency is beamed into human body for sonography?

• 30-45 MHz

• 15-30 MHz

• 1-15 MHz

• 1-15 MHz

Biological organisation starts with

• submicroscopic molecular level

• cellular level

• organismic level

• organismic level

Which one of the following statements is correct?

• Neurons regulate endocrine activity, but not vice versa

• Endocrine glands regulate neural activity, and nervous system regulates endocrine glands

• Neither hormones control neural activity nor the neurons control endocrine activity

• Neither hormones control neural activity nor the neurons control endocrine activity

Bowman's glands are found in

• olfactory epithelium

• external auditory canal

• cortical nephrons only

• cortical nephrons only

Which one of the following not act as a neurotransmitter?

• Acetylcholine

• Epinephrine

• Nor epinephrine

• Nor epinephrine

Good vision depends on adequate intake of carotene rich food
Select the best option from the following statements
(a) Vitamin A derivatives are formed from carotene
(b)The photopigments are embedded in the membrane discs of the inner segment
(c) Retinal is a derivative of vitamin A
(d) Retinal is a light absorbing part of all the visual photopigments

• (a) & (b)

• (a), (c) & (d)

• (a) & (c)

• (a) & (c)