List of top Botany Questions on Plant Physiology

What is the characteristic genetic ratio of a dihybrid cross involving dominant epistasis?
In the C4 pathway, which enzyme is responsible for the primary carboxylation in mesophyll cells?
Capsule is found in
Assertion (A): In plant vacuole, the concentration is higher than the cytoplasm.
Reason (R): Tonoplast facilitates the transport of ions and other materials against concentration gradient.
Identify the correct option from the following
Options:
Shrinkage of protoplast due to diffusion of water from the cell into the surroundings.
Choose the correct statement from the following
(I) In Hatch-Slack pathway mesophyll cells lack RuBisCO enzyme
(II) PEP carboxylase is present in bundle sheath of chloroplast
(III) OAA is formed in mesophyll cells
(IV) PEP is primary CO2 acceptor present in chloroplast of bundle sheath cells
Match the following:
List - I List - II
A. Nucleic acids structureIV. Phosphorous
B. Synthesis of nucleic acidIII. Iron
C. Stabilize protein structureII. Sulphur
D. CatalaseII. Sulphur
Choose the correct combination regarding mechanism of translocation:
Assertion (A): Due to water stress the bulliform cells in grasses make the leaf curl outward to minimise water loss.
Reason (R): Bulliform cells are large, empty and colourless cells.
Identify the correct option from the following:
Study the following table and identify the correct combination
Attraction of water molecules to polar surfaces in tracheary elements:
Transduction was discovered by 'X' in 'Y'. Identify 'X' and 'Y' respectively:
A fragment of TMV particle having 710 capsomers would have a length of
Which nitrogen fixing symbiont is associated with sugarcane as a host plant?
Which of the following hormones is synthesized from methionine?
The requirement of sunlight for the germination of seeds, is known as:
What is the role of Gibberellic acid in plants?
The example of facultative CAM plant which carries on C₃ metabolism under unstressed conditions is:
Cytokinin treatment extends the life span of detached Xanthium leaves by delaying chlorophyll and protein degradation. This experiment is called:
Match the LIST-I with LIST-II
LIST-I
Minerals		LIST-II 
Deficiency Symptoms in Plants
A. CalciumIII. Necrosis of young meristematic regions such as root tips or young leaves
B. ZincIV. Display of rosette habit
C. ManganeseI. Intervenous chlorosis associated with the development of small necrotic spots
D. NickelII. Accumulation of Urea in the leaves
Choose the correct answer from the options given below:
Guttation occurs when:
Flooding stress is also known as:
Transduction was discovered by 'X' in 'Y'. Identify 'X' and 'Y' respectively:

Study the table and find deficiency symptoms shown in plants

Find the correct statements regarding the structure of xylem and phloem: 
I. Xylem parenchyma store starch or fat or Tannins 
II. Xylem parenchyma have highly thickened walls and obliterated central lumens 
III. Companion cells are controlled by nucleus of sieve tubes 
IV. Phloem parenchyma is absent in most of the monocots