Home
Class 12
BIOLOGY
identify the correct pair of statement ...

identify the correct pair of statement
I.functions of sieve tubes is controlled by nucles of companion cells.
II. Albuminous cells are present in angiosperms
III. In dicot root, the vascular cambium is competely of primary plant body.

A

I and III

B

II and IV

C

I and II

D

II and III

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Similar Questions

Explore conceptually related problems

Find the correct pair of statements (i) Influx of Cl- into guard cells during stomatal opening is active. (ii) Entry of sucrose from companion cells into sieve tubes at source involves expenditure of energy (iii) At the sinks sucrose moves out of phloem by passive transport (iv) Efflux of K^(+) from guard cells during stomatal closure does not involve energy expenditure

Study the following statements and choose the correct option. I. Buds are present in the axil of leaflets of the compound leaf. II. Pulvinus leaf-base is present in some leguminous plants. III. In Alstonia, the petioles expand, become green and synthesize food. IV. Opposite phyllotaxy is seen in guava.

Identify the correct pair of statements I. Niacin containing coenzymes facilitates the oxidation of malate in the matrix of mitchondria II. Heam is the prosthetic group for the enzyme which catalyses the carboxylation of RuBP in the stroma of chloroplast, III. The electron carrier between cyt c-oxidase and cyt-c-reductase is attached to inner membrane of mitochondria. IV. Water spliting reaction in the lumen of thylakoid requires chlorine. (a) I, II (b) I, IV (c) II, III (d) III, IV

Identify the correct pair of statements I. Movement of cytoplasm around vacuoles occurs in clockwise and anticlockwise manners in Hydrilla II. Heteropicnosis refers to differential stainability of chromatin III, Dissolution of synaptonemal complex occurs in diplotene IV. Either clockwise or anticlockwise movement of cytoplasm around vacuoles occurs in Rheo discolor

Identify the correct pair of statement (i) pericyle parenchymatous in dicot root but sclerenchymatous in mature monocot root (ii) pericycle of both dicot and monocot root produces lateral roots during secondary growth (iii) All cells of dicot root endodermis are passage cells (iv) Xylem is produced in centripetal manner in roots of fruit bearing plants

Identify the correct pair of characters with reference to Pteris. I, Neck canal cell is uninucleated II Stem grows vertically in soil III. Apogamously produced sporophytes are haploids IV. Open dichotomous venation in leaflets

Identify the correct pair of characters of a bacterium which is useful in production of methane (i) Recyclers of inorganic nutrients (ii) Present in stomach of cattle (iii) Obtain energy from sunlight (iv) Aerobes

Find out the correct pair of statements (i) In completely plasmolysed cell, pressure potential does not contribute to water potential (ii) If a cell is placed in hypotonic solution for longer time , the cell membrane shrinks away from its cell wall (iii) Apoplastic system comprises interconected protoplasts (iv) Polypeptides have more imbibing capacity then polysaccharides

Identify the correct pair of statements (i) Alternate name of thymine is 5- methyl uracil (ii) Arachidonic acid molecule contains less number of carbons than palmitic acid (iii) Cellulose contains helices (iv) Aquaporin is a polypeptide

Identify correct pair of statements (i) Attraction between two molecules of water present in oxylen channel is adhesion (ii) Number of O_(2) molecules absorbed is more than number of CO_(2) molecules released when triolein is respiratory substrate (iii) Bacillus mycodies is nitrifying bacteria (iv) Continuous system of cell walls and intercullular spaces in plant tissues is called apoplast 1 ii and iii 2 iii and iv 3 ii and iv 4 I and iv.