Zoology

How are sieve tubes different from sieve cells? A. Being shorter B. Being dead C. Lacking Nuclei D. Having sieve pores at end walls

Arrange the following in a logical sequence. Renal veins Renal arteries afferent arteriole Efferent arteriole Glomerulus (pathway of blood through the glomerulus).

What are beta cells of pancreas?

Adenoids are functional up to the age of (a) 4 years (b) 10 years (c) Adolescence (d) 20 years

A nail is driven in a stem of mango tree 2 meters above the ground. How much height is attained by the nail after 5 years? A) 3 meters B) 5 meters C) 10 meters D) Nail remains at same height i.e. at 2 meters

Acoelomate animal with protandrous nature is (a) Ascaris (b) Schistosoma (c) Taenia (d) Megascolex

______ and ______ pairs of ribs are called floating ribs.

Active and passive transports across the cell membrane differ in A. Passive transport is non-selective. B. Passive transport is along the concentration gradient while active transport is due to metabolic energy. C. Active transport is more rapid. D. Passive transport is confined to anions while active transport is confined to cations.

Aggregate fruit develops from a single flower with a. Free ovaries b. Fused ovaries c. Non functional ovaries d. Transversely arranged ovaries

Abnormal secondary growth is observed in A. Dracaena B. Wheat C. Ginger D. Rice