11.

Oxidative decarboxylation of pyruvic acid results in the formation of

I. Acetyl CoA 

II. CO₂ 

III. ATP

IV. NADH + H⁺

• I only

• I and II only

• I, II and III only

• I, II and IV only

• I, II and IV only

Select the correct order of reactions in glycolysis

(A) Conversion of 3-phosphoglyceraldehyde to 1,3-bisphosphoglycerate

(B) Conversion of 3-phosphoglyceric acid to 2- phosphoglycerate 

(C) Conversion of BPGA to 3 phosphoglyceric acid 

(D) Splitting of fructose 1, 6 bisphosphate into dihydroxy acetone phosphate and 3-phosphoglyceraldehyde

• (D), (C), (A), (B)

• (B), (C), (A), (B)

• (B), (D), (C), (A)

• (A), (D),(C), (B)

• (A), (D),(C), (B)

Free living nitrogen fixing aerobic bacterium is

• Rhodospirillum

• Anabaena

• Nostoc

• Beijernickia

• Beijernickia

Which of the following plant growth hormone increases the yield of sugar by increasing the length of stem in sugarcane?

• Cytokinin

• Auxin

• Abscisic acid

• Ethylene

• Ethylene

One hormone hastens the maturity period in juvenile conifers, a second hormone controls xylem differentiation while the third increases the tolerance of plants to various stresses and they are respectively-

• Auxin, Gibberellin and Cytokinin

• Gibberellin, Auxin and Cytokinin

• Gibberellin, Auxin and Ethylene

• Gibberellin, Auxin and ABA

• Gibberellin, Auxin and ABA

Which of the following is NOT an effect of ethylene?

• Promotes senescence and abscission of plant organs

• Breaks seed and bud dormancy

• Brings about horizontal growth of seedlings

• Hastens fruit ripening

• Hastens fruit ripening

Match Column I with Column II and select the correct option

• A - 2; B - 1; C - 4; D - 3

• A - 4; B - 3; C - 2; D - 1

• A - 2; B - 4; C - 1; D - 3

• A - 3; B - 4; C - 1; D - 2

• A - 3; B - 4; C - 1; D - 2

Which of the following statement(s) about taxonomical aids is/are true?

I. Keys are used to identify plants and animals based on similarities and dissimilarities.

II. Flora contains the account of habitat and distribution of plants in a given area.

III. Flora provide an index to the plant species found in a particular area.

IV. Monographs provide information for identifying the species found in an area.

• I and II only

• I, II and III only

• I and IV only

• I only

• I only

Which one of the following shows, the hierarchial arrangement of taxonomic categories of plants in descending order?

• Kingdom $\leftarrow$Division $\leftarrow$Class $\leftarrow$Order $\leftarrow$Family $\leftarrow$Species $\leftarrow$Genus

• Kingdom $\leftarrow$ Division $\leftarrow$ Order $\leftarrow$ Class $\leftarrow$ Family  $\leftarrow$Species $\leftarrow$ Genus

• Kingdom $\to$ Division $\to$ Order $\to$ Class $\to$ Family  $\to$Genus $\to$ Species

• Kingdom $\to$ Division $\to$ Class $\to$ Order $\to$ Family $\to$ Genus $\to$ Species

• Kingdom $\to$ Division $\to$ Class $\to$ Order $\to$ Family $\to$ Genus $\to$ Species

Which of the following does not apply to Ascomycetes?

• Mycelium is coenocytic and aseptate

• Commonly known as sac fungi

• Asexual spores called conidia are produced exogenously

• Sexual spores called ascospores are produced endogenously

• Sexual spores called ascospores are produced endogenously