GATE Life Sciences - Plant Physiology and Photosynthesis

Both A and R are incorrect.
Leukocytes make up approximately 1% of the total blood volume in a healthy man.
An increase in the number of leukocytes over the upper limits is called leukocytosis, and a decrease below the lower limit is called leukopenia.

Bundel sheath is not found in C₃ plants. Thus, this option is correct.

In hexose monophosphate shunt, Xylulose 5-phosphate converts into ribulose 5-phosphate, is catalysed by ribulose-phosphate epimerase.
Conversion of ribose 5-phosphate to Ribulose 5-phosphate is catalysed by ribose-5-phosphate.

Two major classes of herbicides that block photosynthetic electron flow are derivatives of urea and triazine herbicides. These herbicides interfere in PS II with binding of plastoquinone (Q) and thus, blocks the transfer of electrons to plastoquinone and also blocks electron transport between PS II and PS I.
Examples:
Urea derivatives: 3-(4-chlorophenyl)-1-methoxy-1-methylurea and 3-(3,4-Dichlorophenyl)-1,1-dimethylurea
Triazine derivatives: 6-Chloro-N,N'-diethyl-1,3,5-triazine-2,4-diamine and 1-Chloro-3-ethylamino-5-isopropylamino-2,4,6-triazine.

Money tree (Crassula ovata) is an example of CAM plants. CAM is named after the family Crassulaceae, CAM stands for crassulacean acid metabolism because it was first studied in members of the plant family Crassulaceae, to which Jade plant (Crassula ovata) belongs.

PS I lies in the outer surface of thylakoids.
PS I participates in both cyclic as well as noncyclic photophosphorylation.

Quantum yield of photosynthesis is 0.125.
90% of the total photosynthesis in the world is carried out by marine algae.

Plastocyanin is a copper-containing protein that plays a role in the electron transport process associated with photosynthesis.

Two light trapping systems (PS I and PS II) are involved in noncyclic photophosphorylation.
NADPH is synthesised during noncyclic photophosphorylation.

Phosphoenolpyruvate  (PEP) in mesophyll cells and Ribulose-1,5-bisphosphate (RuBP) in bundle sheath functions as carbon dioxide acceptors.
C₄ plants require 30 ATP for synthesis of one molecule of glucose.

Adrenal virilism is the development of male secondary sex characteristics caused by male sex hormones called androgens, excessively produced by the adrenal gland.
Conn's syndrome is a disease of the adrenal glands involving excess production of a hormone, called aldosterone.

Chlorophyll c is found only in the photosynthetic members of the Chromista as well as the dinoflagellates.
Phycobilins are water-soluble pigments and are therefore, found in the cytoplasm or in the stroma of the chloroplast. They occur only in Cyanobacteria and Rhodophyta.

The correct sequence for flow of electrons from excited P680* (in PS I) to P700 (reaction centre of PS II) is P680* → Pheophytin → Plastoquinone → Cytochrome b6-f complex → Plastocyanin → P 700.
The excited form of P680, designated as P680*, is rapidly photo oxidized as it passes an electron to pheophytin, which is the primary electron acceptor of PS II. Reduced pheophytin, then hands on the electron to reduce plastoquinone. From reduced plastoquinone, electrons are accepted by cytochrom b6-f complex which gets reduced in this process. From reduced Cytochrome, b6-f complex electrons are taken up by plastocyanin, which is thus reduced. From reduced plastocyanin, electrons are accepted by P700, reaction centre of PS I, which is thus reduced.

Both are incorrect statements.
In capping, methyl guanosine triphosphate is added to the 5'-end of hnRNA. In tailing, adenylate residues are added at 3'-end in a template independent manner. It is the fully processed hnRNA, now called mRNA, that is transported out of the nucleus for translation.

DNA Data Bank of Japan (DDBJ) is a nucleotide sequence database. It is a biological database that collects DNA sequences.
MEDLINE is a bibliographic database of life sciences and biomedical information which provides bibliographic information for articles from academic journals covering medicine, nursing, pharmacy, dentistry, veterinary medicine, and health care.
NatureServe is a sophisticated biodiversity database which acts as an authoritative source for information on more thant 70,000 plants, animals, and ecosystems of the United States and Canada.
WormBase is an online biological database about the biology and genome of the model organism Caenorhabditis elegans (a nematode) and contains information about other related nematodes.