STD 12 - 13. biodiversity and conservation — NEET STD 11 Science — Question

Which of the following is used in biotechnology

Statement-I- In haemophilia a single protein that is a part of the cascade of proteins involved in the clotting of blood is affected.
Statement - II- Thalassemia can be classified according to which chain of the haemoglobin molecule is affected.

The roots of gymnosperms is

During budding the primary septum separating the parent cell and the bud is made up of

Prokaryotic flagella possess

Which one of the following statements are correct ?
(i) Collagen is the most abundant protein in plant world and RuBisCo in the whole biosphere.
(ii) Cellulose is a homo polymer.
(iii) Inulin is a polymer of Fructose.
(iv) In polysaccharides chain, the left end is called reducing end and Right end is called nonreducing end.
(v) The starch-I is blue in colour.
(vi) Plant cell walls are made of cellulose polysaccharide,
(vii) Paper made from plant pulp and cotton fibre contains cellulose polysaccharide mainly.
(viii) Adenine and guanine nitrogenous bases constitute pyrimidine.
(ix) A nucleic acid containing deoxyribose is called DNA while that which contain ribose is called RNA.
(x) Secondary structure of protein is the sequence of amino acids in it.
(xi) In protein, the first amino acid is also called as N-terminal amino acid and last amino acid is called the C-terminal amino acid.
(xii) In proteins, only left handed helices are observed.
Choose the correct option given below :-

Low concentration of auxin lowers the growth of

Which of the following possess vascular tissues but lacks seeds?