List of top Biology Questions

Sinus venosus is a thin-walled sac with little muscular tissue in primitive heart. It receives venous blood through the hepatic veins.

Now-a-days amniocentesis is banned. Amniocentesis gives the information of any abnormality in the foetus and many other complications regarding pregnancy can be detected.

DNA is present is

Blood in cockroach is colourless haemolymph with no respiratory pigment. Respiration in cockroach occurs through diffusion in haemolymph.

Algal blooms are formed in nutrientless water. Algal blooms in water turn it unfit for human consumption, but cause enormous growth of fish.

A mangrove tree growing in marshy place has pneumatophores. Pneumatophores help in better anchorage to marshy soil.

Asexual reproductive structure of Hydra is

Placoid scales are characteristic feature of the class

The medulla oblongata contains centres which control

Which one of the following is the high quality pearl producing species

Which cell inclusions are found in mycoplasmas, spirochaetes and rickeltsias ?

The generic name of Mango is

Analogous structures are

Analogous structures are a result of :

In which of the following groups are seeds present?

Ergotamine tartarate extracted from Claviceps, is used for cure of

Pappus helps in dispersal of pollen in

What type of sorus is present in Nephrolepis?

One of these protozoans is threat to apiculture and sericulture

The animal group which does not exist in Galapagos island is

After glycolysis, fate of glucose in mitochondrial matrix is

Photosynthetic bacteria have

Diatoms do not decay easily because

Protists obtain their food as

Dialysis fluid contains all the constituents as in plasma except