Commercially important cotton fibers are
Which vein brings clean blood from the lungs into the heart?
Which of the following is not correct?
What type of a body plan does coelenterates, ctenophores and echinoderms have?
A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called __________
Haemolymph is observed in
Which cell disorder in our body is responsible for colour blindness?
The land of maximum biodiversity is
Presence of large amounts of nutrients in waters also causes excessive growth of ......algae.
Which of the following disease is caused by female Anopheles mosquito?