Model Paper 10 — NEET STD 11 Science — Question

Statement $I$ : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.

Statement $II$ : When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.

In the light of the above statements, choose the correct answer from the options given below :

$I.$ In liverworts sexual reproduction occurs by the fusion of antherozoids and egg, which are produced in anthridium and archegonium, respectively

$II$. Both male and female sex organs may be present on same thalli or different thalli

$III.$ Zygote give rise to sporophyte, which is differentiated into food, seta and capsule

$IV$. Some cells of capsule undergoes meiosis and give rise to haploid spores