Velamen takes part in
The structural adaptation found in the alimentary canal of cockroach for the conservation of water
Which one is essential for nitrogen fixation ?
Blood vessels that allow diffusion of gases through their thin walls are the
Ribosome take part in protein synthesis in
Basal bodies are associated with the formation of
Organelle/organoid involved in genetic engineering is
Which among the following is the man made cereal?
Food levels of an ecosystem are known as
Pioneers in the field of organic evolution were
Which one of the following is a living fossil?
Homology is similarity in
What is the first step in the southern blot technique?
DNA polymerase takes part in
tRNA has two unequal free arms
Which of the following is possible for linked gene?
A human male has one one barr body in his somatic cell nuclei. The chromosome constitution must be
Self fertilising trihybrid plants form
Perspiration contains an enzyme that kill bacteria. It is
Which would result in haemolysis in foetus ?
Cells involved in immune mechanism are
Vegetable crop cultivation is known as
Fig fruit is type of
Lysigenous cavity is found in
In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?
Which one is not a plant fibre
Spraying of DDT on crops causes pollution of
In acid rain, sulphuric acid accounts for
Which one of the following theories explains the formation of pseudopodium in Amoeba?
The function of the endometrium is to
Study of immunological reaction is
Who believed that an organ in disuse will become vestigial?
Frequency of a character increases when it is
Naturalist who sailed round the world in ship Beagle was
Blood entering the kidney is filtered by the
Which of the following metabolic wastes is excreted by the skin?