Biology

In a water culture experiment, the culture solution in a transparent beaker turned green. What precaution should have been taken to prevent the culture solution from turning green?

A. Changing the culture solution regularly B. Increasing the number of times the culture is aerated C. Covering the transparent…

6 years ago

In grasshopper/cockroach digestion starts from the?

A. oesophagus B. crop C. gizzard D. midgut E. mouth Correct Answer: Option E - mouth

6 years ago

Which of the following pairs consists of gametes?

A. Ova and spermatozoa B. Spores and sporangium C. Flowers and pollen grains D. Testes and ovaries E. Gametophyte and…

6 years ago

The most sensitive part of the retina is called?

A. blindspot B. conjuctiva C. fovea centralis D. choroid coat E. sclerotic coat Correct Answer: Option C - fovea centralis

6 years ago

Which of the following is the effect of continuous tillage on an ecological system?

A. Addition of more. humus to the soil B. Decrease in productivity C. Increase in yield D. Improved fertility E.…

6 years ago

The maintenance of a constant internal environment of an organism is known as?

A. homeostasis B. homeorhesis C. turgidity D. homoiothermy E. diuresis Correct Answer: Option A - homeostasis

6 years ago

In which of the following groups is nephridium found?

A. Crustaceans B. Reptiles C. Birds D. Mammals E. Annelids Correct Answer: Option E - Annelids

6 years ago

Which of the following statements about the lymphatic system is not correct?

A. The lymph vessels are always larger in size than the arteries B. The flow of lymph is assisted by…

6 years ago

Which of the following is more concentrated in the blood within the renal artery than the blood within the renal vein?

A. Urea B. Red blood cells C. Glucose D. Protein E. White blood cells Correct Answer: Option A - Urea

6 years ago

Which of the following articulates with the pelvic girdle?

Study the list The vertebral column of mammals consists of the following: I. Lumbar vertebrae II. Thoracic vertebrae III. Caudal…

6 years ago