Muscles of the heart are

• striated and voluntary

• non-striated and voluntary

• striated, unbranched and involuntary

• non-striated and involuntary

• non-striated and involuntary

The skeletal muscle fibre is a 'syncytium', which means it is

• made up of many fibres

• made up of many proteins

• long and slender

• swollen in the middle with tapered ends

• swollen in the middle with tapered ends

The anterior portion of the sclera is called

• Lens

• Iris

• Pupil

• Ciliary body

• Ciliary body

The projecting ridge in ampulla of semi-circular canals in ear is called

• Succus entericus

• Maccula

• Otolith

• Crista ampullaris

• Crista ampullaris

The pars distalis region of pituitary does not produce these hormones

I. Melanocyte stimulating hormone

II. Vasopressin

III. Prolactin

IV. Growth hormone

• III only

• I and IV

• II and IV

• II and III

• II and III

76.

Function of the somatostatin is to

• stimulate pituitary synthesis and release gonadotropins

• inhibit the release of gonadotropins from pituitary

• stimulate pituitary and promotes the secretion of growth hormone

• inhibit the release of growth hormone from the pituitary

• inhibit the release of growth hormone from the pituitary

Consider the following statements and choose the correct option

(A) The ovule is attached to the placenta by means of a stalk called filament

(B) The ovule fuses with the stalk in the region called hilum

(C) The two protective envelopes of ovule are called integuments

(D) The small opening in the tip of ovule is called germ pore

Of the above statements

• (A) and (D) are correct

• (A) and (C) are correct

• (B) and (D) are correct

• (B) and (C) are correct

• (B) and (C) are correct

Who proved that blends of polyblend (plastic waste) and bitumen, when used to lay roads, enhanced the bitumen's water repellant properties and helped to increase road life? 

• Amrita Devi

• Ramdeo Misra

• W.H. Pearsall

• Ramesh Chandra Dagan

• Ramesh Chandra Dagan

Match the following.

Column I	Column II
A. Earthworm	1. Catabolism
B. Bacterial and fungal enzymes	2. Breaks down detritus into smaller particles
C. Accumulation of dark coloured amorphous substance	3. Detritivores
D. Fragmentation	4. Humus

• (A) - (3), (B) - (2), (C) - (4), (D) - (1)

• (A) - (3), (B) - (l), (C) - (4), (D) - (2)

• (A) - (2), (B) - (1), (C) - (4), (D) - (3),

• (A) - (2), (B) - (3), (C) - (4), (D) - (1)

• (A) - (2), (B) - (3), (C) - (4), (D) - (1)

The first trophic level in an ecosystem consists of

• Primary producers

• Primary consumers

• Secondary producers

• Secondary consumers

• Secondary consumers