Photosynthesis in Higher Plants- Quiz 7

Kranz type of leaf anatomy is observed in

• C₃ plants

• C₄ plants

• C₃ and C₄ plants

• Hydrophytic plants

The entire reactions of C₄ pathway takes place in

• Mesophyll and bundle sheath

• Vascular bundle and palisade tissue

• Mitochondria and peroxisome

• Bundle sheath and endoplasmic reticulum

Photosynthesis cannot be operated in :

• Red light

• Yellow light

• Green light

• Blue light

Ferrodoxin (Fd) is a

• Non-heme iron protein

• Heme iron protein

• Copper containing protein

• None of the above

Phosphoenol pyruvate (PEP) is the primary CO₂ acceptor in:

• C₄ plants

• C₂ plants

• C₃ and C₄ plants

• C₃ plants

The common feature between cyclic and non cyclic photo phosphorylation is :–

• Photosystem - II

• Source of electrons

• Proton gradient

• Release of O₂

A minimum ratio of transpiration to photosynthesis will be observed on a

• humid and cloudy day

• humid day and sunny day

• sunny day with no winds

• sunny day with strong winds

Why are C₄ plants able to photosynthesize with no apparent photorespiration?

• They do not participate in the Calvin cycle.

• They use PEP carboxylase to initially fix CO_2.

• They are adapted to cold, wet climates.

• They conserve water more efficiently.

In which of the following phosphorylation in absent:

• Glycolysis

• Kreb cycle

• C₄ cycle

• ETS

Photosynthesis in C₄ plants is usually not limited by atmospheric CO₂ levels because

• Effective transportation of CO₂ as malic acid into bundle sheath cells.

• RubisCO in C₄ plants has higher affimity for CO₂.

• Four carbon acids are the primary initial CO₂ fixation products.

• The primary fixation of CO₂ is mediated via PEP carboxylase.