STD 11 - 15. Body fluids and criculations — NEET STD 11 Science — Question

“Shell of mollusc is produced by its

Assertion: 'Factors' regulating the characters are found in pairs.
Reason: The dominant characters are even expressed when factors are in heterozygous condition

Test tube baby means a baby born when

Delete odd one:

Which of the following option is correct for given statements ?
(i) About 3000 million years ago (mya) the first cellular forms of life appeared on earth.
(ii) Some of these cells had the ability to release O became multi-cellular life forms.
(iii) By the time of 500 mya, invertebrates were formed and active.
(iv) Jawless fish probably evolved around 350 mya.
(v) About 250 mya fish with stout and strong fins could move on land and go back to water.
(vi) Probably 200 mya some of land reptiles like dinosaurs went back into water to evolve into fish like reptiles Ichthyosaurs.
(vii) Coelacanth called lobefins evolved into the first amphibians that lived on both land and water.

Diploblastic acoelomate condition is found in

With reference to the blood in a normal person, which one of the following statements is correct?

The number of floating ribs in human body is