The net requirement of assimilatory power for the formation of 6 hexose molecules in maize plant is

• 72 ATP, 48 NADPH

• 90 ATP, 60 NADPH

• 108 ATP, 72 NADPH

• 180 ATP, 72 NADPH

Which one of the following elements is an activator for both ribulose biphosphate, carboxylase oxygenase and phosphoenol-pyruvate carboxylase in photosynthetic carbon fixation?

•  Mg²⁺

• Zn²⁺

•  Mn²⁺

• Cl⁻ and K⁺

Vegetative propagation of Bryophyllus takes place through

• Bulbil

• Corms

• Leaf buds

• Eyes

Which of the following characteristics out of I, II and III are exhibited by C₄ plants?

I. Kranz anatomy.

II. The product of photosynthesis is oxalo acetic acid.

III. Both PEP carboxylase and ribulose-bis phosphate carboxylase act as carboxylating enzyme.

Choose the correct option.

• I and II, but not III

• II and III, but not I

• I and III, but not II

• All of these

Light reaction in stroma lamellae of the chloroplast results in the formation of

• NADPH

• ATP + NADPH

• ATP K

• O₂

In leaves of Ce plants, malic acid synthesis during CO₂ fixation occurs in

• Bundle sheath

• Mesophyll

• Epidermis

• Guard cells

In which form does the food transported in plants?

• Sucrose

• Fructose

• Glucose

• Lactose

In CAM plants, CO₂ acceptor is

• RuBP

• PEP

• OAA

• PGA

DCMU 

• inhibits PS- I

• inhibits PS- II

• destroy chloroplast

• inhibits oxidative phosphorylation

160.

What happened when we inoculated Rhizobium in wheat field?

• No increase in production (nitrogen content of soil remains same)

• A lot of increase in production (nitrogen content of soil increases)

• Fertility of soil decreases

• Fertility of soil increases