List of top Biology Questions

Best defined function of manganese in green plants is

Read the following statements (a - e) and answer as asked (a) In Equisetum, the female gametophyte is retained on the parent sporophyte (b) In Ginkgo, male gametophyte is not independent (c) The sporophyte in Riccia is more developed than that in Polytrichum (d) Sexual reproduction in Volvox is isogamous (e) The spores of slime moulds lack cell walls How many of above statements are correct

Read the following four statements (A - D). (A) In transcription, adenosine pairs with uracil. (B) Regulation of lac operon by repressor is referred to as positive regulation. (C) The human genome has approximately 50,000 genes. (D) Haemophilia is a sex-linked recessive disease. How many of the above statements are right?

Read the following four statements (A - D). (A) Colostrum is recommended for the new born because it is rich in antigens. (B) Chikungunya is caused by a Gram negative bacterium. (C) Tissue culture has proved usefiil in obtaining virus-free plants. (D) Beer is manufactured by distillation of fermented grape juice. How many of the above statements are wrong?

The coconut water and the edible part of coconut are equivalent to

For its activity, carboxypeptidase requires

Even in absence of pollinating agents seed-setting is assured in

Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman, select the right option for the two, together. Dev elopmental - Site of occurrence stage

Green revolution in India occurred during

Plants with ovaries having only one or a few ovules are generally pollinated by

Closed vascular bundles lack

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as

The maximum amount of electrolytes and water ($70 - 80$ percent) from the glomerular filtrate is reabsorbed in which part of the nephron?

Common cold differs from pneumonia in that Pneumonia

Gymnosperms are also called soft wood spermatophytes because they lack

Placentation in Tomato and lemon is

Which one of the following is not a gaseous biogeochemical cycle in ecosystem?

How many organisms in the list given below are autotrophs ? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia

Select the correct statement about biodiversity

The highest number of species in the world is represented by

Vexillary aestivation is characteristic of the family

Cymose inflorescence is present in

Which is not a functional unit of an ecosystem

Which one of the following pairs is wrongly matched ?

The gynoecium consists of many free pistils in flowers of