Home
Class 12
BIOLOGY
Identify the correct pair of characters ...

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

A

II and IV

B

III and IV

C

I and II

D

I and III.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

Identify the correct pair of characters in physalis I. Petiole adnate to stem. II. Thalamus cup-shaped. III. Seeds non-endospermic. IV. Flowers hypogynous.

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.

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 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 statements with reference to nervous system of Periplaneta (i) Brain is mainly sensory and an endocrine gland (ii) All thoracic ganglia supply nerves to the parts of their respective segments only (iii) Sixth abdominal ganglion is the largest of all abdominal ganglia (iv) Frontal ganglion is connected to ingluvial ganglion by a recurrent nerve

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 the wrong pair of statements I. Number of stamens in 5 flowers of Allium is equal to those in 5 flowers of Solanum II. The microporangia of Hibiscus and Asparagus are having 80 pollen grains each. Then the ratio of number of pollen grains produced from each stamen of these two plants in 1:1 III. The ratio of number of stamens in the flowers of Pisum and Datura is 2:1 IV. The number of carpels in a flower of Smilax is equal to carpels in cyathium inflorescence.

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

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.

Identify the correct pair of combination I. Viroid -Bovine spongiform encephalitis , II. Prion-Creutzfeldf-Jakob disease III. Measles Virus -Glycoprotein projecions IV. Rabies Virus-Polyhedral symmetry