Physiology and Biochemistry
Description: GATE Botany Physiology & Biochemistry-2 | |
Number of Questions: 20 | |
Created by: Darshan Khurana | |
Tags: GATE Botany Physiology & Biochemistry-2 Life Sciences - XL |
Which of the following hemeproteins play the role of electron carrier in both the respiration and photosynthesis?
During plant photorespiration, ribulose biphosphate is decomposed into carbon dioxide after joining with oxygen. The right sequence in which such products emerge from ribulose bisphosphate in the photorespiration pathway, is ____________.
On exposure to a shock or automated blow the leaflets of Mimosa pudica plant close upwards and its lower portion of petiole contracts. What is this movement called?
The level of critical toxicity due to mineral nutrients means decrease in plant tissues' dry weight by _____.
Photochemical is the photosynthesis’s primary reaction which occurs in chloroplast. It is done by a series of electron carriers with phosphorylation of ADP to ATP. What is the actual site of such reaction?
Which of the following combination is appropriate to the bacterial photosynthesis?
RuBISCO enzyme serves dual function in the chloroplast at the time of photosynthesis and forms either 3-phosphoglyceric acid or glycolic acid under various environmental conditions. Under which of the following conditions glycolic acid would be produced?
CO2 double fixation occurs both in the C4 and CAM plants. Which of the following option brings out the actual difference between this two?
What happens at the time of senescence of the plant?
The Mitchell or chemiosmotic hypothesis conclude the ____________.
When short day plant (SD) and long day plant (LD) both are preserved under friendly condition for flowering and are exposed to short flash of red light in mid of dark period then
Recognize the following options regarding plants’ growth movements: (a) Growth movements in the flowering plants are always triggered by the external stimuli like light and gravity. (b) Varying growth of cells in various parts of affected organ causes growth movements. (c) Growth movements are extremely slow and may be observed only via time-lapse photography. Which of the above statements is/are true?
Allelopathic effects of excretion of one species on another species is associated with ___________.
Which of the following is not associated with the enduring closure of stomata found on photosynthesizing plant organs in few desert plants?
Study the following compounds (a) Phosphoenol pyruvate (b) Malic acid (c) Pyruvic acid (d) Oxaloacetic acid
What is the right sequence of such intermediate compounds as they produce in C4 –dicarboxylic acid pathway following the PEP-carboxylation reaction?
Nitrogen is a severe chemical in both the protein and DNA. So every living organism should metabolize nitrogen for surviving. Only bacteria and Archaea are capable to convert gaseous nitrogen (N2) to and from soluble ionic compounds, which other organisms may metabolize.
Which of the following bacteria minimizes nitrate to gaseous nitrogen?
Nitrogen is a severe chemical in both the protein and DNA. So every living organism should metabolize nitrogen for surviving. Only bacteria and Archaea are capable to convert gaseous nitrogen (N2) to and from soluble ionic compounds which other organisms may metabolize.
At the time of symbiotic biological nitrogen fixation, the understanding of Rhizobia host interaction includes 2 types of molecules. Which are they?
Scientifically, plant hormone is an organic compound produced in one part of plant and transmitted to other parts in very low concentration casuing physiological responses. 5 major types of endogenous plant growth substances or plant hormones are- auxin, gibberellins, cytokinins, abscis acids and ethylene.
Which of the following types of plant hormones is the alternative for low temperature treatment?
Scientifically, plant hormone is an organic compound produced in one part of plant and transmitted to other parts in very low concentration casuing physiological responses. 5 major types of endogenous plant growth substances or plant hormones are- auxin, gibberellins, cytokinins, abscis acids and ethylene.
Polar transport of auxin in the segments of stem includes the movement of auxin from ___________.
Match the Column I with II and select the right option using the codes provided below the column.
Column I | Column II |
A. Glycine max | 1. Long day plant |
B. Lycopersicon esculentum | 2. Short day plant |
C. Hyoscyamus niger | 3. Day neutral plant |
D. Cestrum nocturnum | 4. Short day-long day plant |
5. Long day-short day plant |