231. The method of reproduction of new plants by cells instead of seed is known is:___________?
A. Tissue culture
B. Mutation
C. Antibiosis
D. Recombination
232. The cardio respiratory capacity is related to____________?
A. Strength
B. Flexibility
C. Normal physical endurance
D. Agility
233. Ultra Microscopic viruses are the main cause of__________?
A. Malaria
B. Measles
C. Mumps
D. Cholera
234. Which is NOT an example of a microbial symbiosis?
A. bacteria in the human colon
B. tapeworm in the cow intestine
C. bacteria passing through the placenta
D. protozoans found within termites
235. Which of the following proteins have role in heredity?
A. Chromo-proteins
B. Lipo-proteins
C. Phospho-proteins
D. Nucleo-proteins
236. Deficiency of vitamin C will cause:__________?
A. Beri-Beri
B. Architis
C. Scurvy
D. Night-blindness
237. Coelom is divided into septa in case of:__________?
A. Molluscs
B. Annelids
C. Sponges
D. Cniderians
238. Haemoglobin is dissolved in the blood of:___________?
A. Earthworm
B. Cockroach
C. Hydra
D. Sponges
239. Like enzymes , co enzyme can be used ?
A. only once
B. only few times
C. again and again
D. non of above
240. Which of the following gases readily combines with the hemoglobin of the blood?
A. Carbon monoxide
B. Methene
C. Oxygen
D. Nitrogen dioxide