Following statements are regarding to double fertilization in angiosperms.

A. One sperm cell fuses with the egg cell to produce the zygote that will develop into the new embryonic plant.

B. The second sperm cell fuses with the usually binucleate central cell, giving rise to the

endosperm, the tissue that nourishes the developing embryo. This second event is not “true” fertilization in the sense of male and female gametes undergoing fusion.

C. The second sperm cell fuses with the usually binucleate central cell, giving rise to the

endosperm, the tissue that nourishes the developing embryo. This second event is “true” fertilization in the sense of male and female gametes undergoing fusion.

D. During fertilization in angiosperm, when the sperm cells are released, the egg undergoes a flux of Ca2+. Then, chemicals released from the egg appear to make the sperm competent for cell fusion.

Which of the following statements are true?

TLS Online TPP Program

#Question id: 27358

#Unit 6. System Physiology – Plant

Choose the correct statement regarding singlet and triplet state

1. singlet state is short lived, net angular momentum and spin quantum number, s is zero

2. singlet state is long lived, net angular momentum and spin quantum number, s is one

3. Triplet state is long lived , net angular momentum and spin quantum number, s is one

4. Triplet state is short lived net angular momentum and spin quantum number, s is zero

TLS Online TPP Program

#Question id: 28069

#Unit 6. System Physiology – Plant

Various responses and different set of pigments are involved on different range of wavelength which of the following concerned with 610 nm-700 nm    

(a) Color name – Far-red

(b) Photopigments – Chlorophylls & Phytochromes

(c) Responses – Photosynthesis, Photomorphogenesis, Secondary metabolism, Shade avoidance, Photoperiodism

Which of the following is correct

TLS Online TPP Program

#Question id: 28070

#Unit 6. System Physiology – Plant

Water splitting/ oxygen evolution is initiated by presence of 

a. P680*

b. P680

c. P680+

TLS Online TPP Program

#Question id: 28071

#Unit 6. System Physiology – Plant

During Water splitting/ oxygen evolution P680+ is directly reduced by

TLS Online TPP Program

#Question id: 28072

#Unit 6. System Physiology – Plant

During photosynthesis water splitting takes place in

TLS Online TPP Program

#Question id: 28073

#Unit 6. System Physiology – Plant

Which of the following is correct regarding ATP & NADPH synthesis and its physiological environment 

(a) ATP & NADPH is synthesized in Stroma

(b) ATP & NADPH is synthesized in Lumen

(c) STROMA is alkaline and similar to Mitochondrial matrix

(d) STROMA is acidic and similar to Mitochondrial matrix

Which of the following is correct