Recent questions tagged biology

Which of the following are found in extreme saline conditions? (a) Eubacteria (b) Cyanobacteria (c) Mycobacteria (d) Archaebacteria

The number of substrate level phosphorylations in one turn of citric acid cycle is : (1) Zero (2) One (3) Two (4) Three

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for (1) Making plastic sacks (2) Use as a fertilizer (3) Construction of roads (4) Making tubes and pipes

Which of these following methods is the most suitable for disposal of nuclear waste? (1) Shoot the waste into space (2) Bury the waste under Antarctic ice-cover (3) Dump the waste within rocks under deep ocean (4) Bury the waste within rocks deep below the ...

Match the following hormones with the respective disease (a) Insulin (i) Addison's disease (b) Thyroxin (ii) Diabetes insipidus (c) Corticoids (iii) Acromegaly (d) Growth Hormone (iv) Goitre (v) Diabetes mellitus Select the correct option. (a) (b) (c) (d) (...

Select the correct option. (1) 8th, 9th and 10th pairs of ribs articulate directly with the sternum. (2) 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage. (3) Each rib is a flat thin bone and all the ribs are ...

In ginger, vegetative propagation occurs through (1) bulbils (2) runners (3) rhizome (4) offsets.

Which one of the following statements is not correct? (1) Offspring produced by the asexual reproduction are called clone. (2) Microscopic, motile, asexual reproductive structures are called zoospores. (3) In potato, banana and ginger, the plantlets arise ...

Which one of the following generates new genetic combinations leading to variation? (1) Vegetative reproduction (2) Parthenogenesis (3) Sexual reproduction (4) Nucellar polyembryony

Inflorescence is racemose in (a) brinjal (b) tulip (c) aloe (d) soybecan.

In a cymose inflorescence the main axis (1) has unlimited growth (2) bears a solitary flower (3) has unlimited growth but lateral branches (4) terminates in a flower.

Match column I with column II and select the correct option using the codes given below. Column I Column II A. Pistils fused together (i) Gametogenesis B. Formation of gametes (ii) Pistillate C. Hyphae of higher Ascomycets (iii) Syncarpous D. Unisexual ...

Which of the following is not a method of in-situc conservationof biodiversity (1) Biosphere reserve (2) Wildlife sanctuary (3) Botanical garden (4) Sacred grove

In China rose the flowers are (1) zygomorphic, hypogynous with imbricate (2) zygomorphic, epigynous with twisted (3) actinomorphic, hypogynous with twisted (4) actinomorphic, epigynous with valvate

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation? Six Seven Eight Five