Following statements are regarding to the mechanism of migration of pollen tube.

A. The embryo sac is the product of three mitotic divisions of the diploid megaspore; it comprises seven cells and eight haploid nuclei.

B. The two polar nuclei in the central cell will fuse with the second sperm nucleus and produce the endosperm that will nourish the egg. The other six cells, including the egg, contain one haploid nucleus each.

C. After compatible pollen germinates, the pollen tube grows toward the micropyle.

D. The three cells from the pollen are connected to one another at the tip of the tube, and waves of sodium ions play a key role in the growth of the tube.

Which of the following combinations are correct?

TLS Online TPP Program

#Question id: 10314

#Unit 6. System Physiology – Plant

How many redox reaction and decarboxylation reaction participate in Kreb’s cycle?

TLS Online TPP Program

#Question id: 10322

#Unit 6. System Physiology – Plant

some of the enzyme of citric acid cycle with its co-factor given in below;

ENZYMES	CO-FACTOR	INHIBITORS
s) Citrate synthase	i) TPP	a) NADH
t) Succinate dehydrogenase	ii) NAD+	b) Monofluoroacetyl-CoA
u) Isocitrate dehydrogenase	iii) Co-A	c) Aresenite, Succinyl CoA, NADH
v) Malate dehydrogenase	iv) FAD	d) ATP
w) α-ketoglutarate dehydrogenase complex	v) NADP+, Mg2+, Mn2+	e) Malonate, Oxaloacetate

Find out the correct combination of Enzymes with its co-factor and inhibitor.

TLS Online TPP Program

#Question id: 10313

#Unit 6. System Physiology – Plant

Which of the following enzyme are found in the inner membrane of mitochondria?

TLS Online TPP Program

#Question id: 10311

#Unit 6. System Physiology – Plant

A succinate dehydrogenase is one of the enzyme of TCA cycle, which is also known as Respiratory complex II. It is competitively inhibited by;

TLS Online TPP Program

#Question id: 10310

#Unit 6. System Physiology – Plant

Which of the following enzyme in the kreb’s cycle function as an allosteric enzyme found in matrix space?

TLS Online TPP Program

#Question id: 10309

#Unit 6. System Physiology – Plant

Which of the following carbon compound also called the oxoglutarate?