51.

Wobble hypothesis was given by

• R.W. Holley

• M. Nirenberg

• H.G. Khorana

• F.H.C. Crick

Curdling of milk in small intestine occurs due to the action of

• rennin

• erypsine

• trypsin

• chymotrypsin

Assertion : Lateral line system is found in fishes and aquatic larval amphibians.

Reason : Lateral line system has receptors which are the clusters of sensory cells derived from ectoderm.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both the assertion and reason are false.

Assertion : The megaspore mother cell undergoes mitosis to produce four megaspores.

Reason : Megaspore mother cells and the megaspores are both haploid.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

Assertion : In bacteria, photosynthesis occurs by utilizing wavelengths longer than 700 nm.

Reason : Here the reaction centre is B-890.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

Assertion : The two cotyledons in the seed are often referred to as the embryonic leaves.

Reason : The embryo contains radicle and plumule.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

Assertion : Clones are a group of organisms of identical genotype, produced by a single parent through asexual means.

Reason : Clones exhibit high genetic variations.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false

• If both the assertion and reason are false.

Assertion : "Rosie", the first transgenic cow, produced human protein-enriched milk.

Reason : The milk contained the human alpha­ for human babies than natural cow milk.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

Assertion : Plasmids are double stranded extrachromosomal DNA.

Reason : Plasmids are possessed by eukaryotic cells.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false.

• If both the assertion and reason are false.

Assertion : The mRNA attaches itself to the ribosome via its 3' end.

Reason : The mRNA has F-capsular nucleotide and bases of lagging sequence.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.