List of top Biology Questions

The thallus of Riccia is internally differentiated into an upper photosynthetic region and lower storage region. The lower storage region is formed from parenchymatous cells.
Pulmonary circulation consists of flow of deoxygenated blood from right ventricle to the lungs and flow of oxygenated blood from lungs to the left atrium. Systemic circulation consists of flow of oxygenated blood from the left ventricle to all parts of the body and deoxygenated blood from different parts to right atrium.
Placenta in addition to connection with mother and foetus to ductless gland. It releases human gonadotropins.
One codon may code for more than one amino acid. A codon is degenerate and ambiguous.
Interspecific competition is the only potent force in organic evolution. Unexceptionally two closely related species competing for the same resources cannot co-exist indefinitely.
In a pivot joint, rounded or pointed bone fits into a shallow depression in another bone. Pivot joints are present between the metacarpals and phalanges of the fingers.
Human heart is myogenic. The contraction is initiated by a specialized patch of modified heart muscles without requiring stimulation from nerve cells.
Which one of the following is wrongly matched?
Which structures perform the function of mito- chondria in bacteria?
Which of the following feature(s) is/are common to both wind and water pollinated flowers? I. Pollen grains are long and ribbon-like II. Stigma is large and feathery III. The flowers are not colourful IV. The flowers do not produce nectar
Which of the following does not apply to ascomycetes?
A scrubber in the exhaust of a chemical industrial plant removes
Find out the mismatched pair.
A drug addict showed symptoms such as increased appetite, chest pain, redness eyes, increased urination. He was possibily taking
The brain disease caused due to accumulation of amyloid $\beta$ -peptide is
Which of the following is a 'cyanophage'?
Which one of the following shows heterothallism?
Which one of the following correctly describes the location of some body parts in the earthworm (Pheretima) ?
Hypothetical plant hormones are
Aerobic respiration produces more usable chemical energy than fermentation, because fermentation involves
There is increase in blood urea when there is insufficient filtration in
ABA is involved in
A person sitting at rest experiences a temporary cessation of breathing after forced deep breathing for a few minutes. This is due to
Which of the following is not a character of cancerous tissues in our body ?
Which of the following statements about the food chain is false?