STD 11 - 3. Plant kingdom — NEET STD 11 Science — Question

Fill in the blanks.
(i) 4-C compounds like A or B formed in mesophyll cell of C₄ plants are transported to the bundle sheath.
(ii) The bundle sheath cells are rich in an enzyme C but lacks D.
(iii) E pathway is common to C₃ and C₄ plants.
(iv) The active site of RuBisCO has both F and G_binding sites. It has greater affinity for H.
(v) PGA binds with O₂ to form one molecule of I and J in a pathway called photorespiration.
(vi) C₄ acid from the mesophyll is broken down in the bundle sheath cells to release K- this results in increasing the concentration of L.
(vii) M is the major limiting factor for photosynthesis.
(viii) Increase in concentration upto N % can cause an increase in CO₂ fixation rates; beyond this the level can become damaging over longer periods
(ix) C₄ plants show saturation at about O u1L^-1 while C₃ responds to increased CO₂ concentration and saturation is seen only beyond P u1L^-1.

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two ?

The amino acids in a protein are held together by

Germpore is the region where the exine is

Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

Prop roots are the modification for

It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for genetic material. This is written by