Home
Class 12
BIOLOGY
Read the following statements and choose...

Read the following statements and choose the correct option
(i) Aves are homothermous
(ii) Pinnae are present in mammals
(iii) Operculum is present in chondrichthyes
(iv) Skin of amphibians is dry and horny .
(v) Open type of circulation is found in cyclostomes

A

`i` and ii are wrong

B

ii , iii and iv are wrong

C

`i` , ii and iv are wrong

D

iii, iv and v are wrong .

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

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.

Read the following statements about 'Humus', Choose the best option (i) Humus is colloidal in nature (ii) Easily and Quickly decomposed by microbial action (iii) Reservoir of nutrients (iv) Dark coloured

Read the following statements and select the incorrect ones. (i) Circulatory system in arthorpods is of closed type. (ii) Parapodia in annelids help in swimming. (iii) Phylum Mollusca is the second largest animal phylum. (iv) Aschelminthes are dioecious.

Read the following statements and choose the correct option (i) Glomerular filtration rate in a healthy individual is about 180 ml/day (ii) All constituents of plasma pass into lumen of Bowman's capsule (iii) 70 - 80% of electrolystes and water are absorbed in PCT (iv) Angiotensin II increases the glomerular blood pressure and GFR (v) Counter current system contribute in concentrating the filtrate

Read the following statements and select the correct option (i) Blood cells secrete fibres of structural proteins called collagen and elastin (ii) Neuroglial cells protect and support the nephrons (iii) Osteocytes are present in spaces called lacunae (iv) Striated muscle fibres are bundled together in a parallel fashion (v) Biceps are involuntary and striated.

Which of the following are the reason(s) for Rheumatoid arthritis? Choose the correct option. (i) Lymphocytes becomes more active (ii) Body attacks self cells (iii) More antibodies are produced in the body (iv) The ability to differentiate pathogens or foreign molecules from self cells is lost

Read the following statements and choose the correct answer. (i) Gap junctions cement adjacent cells together. (ii) Areolar tissue contains fibroblasts , macrophages and mast cells. (iii) Tight junctions facilitate the cells to communicate with each other (iv) Adhering junctions help to stop substances from leaking across tissues (v) Cells of connective tissue except blood secrete fibres of structural proteins called elastin.

Read the following statements and choose the correct options I. Pelvic fins of female sharks bear claspers. II . In Obelia polyps produce medusae sexually and medusae form the polyps produce medusae sexually and medusae form the polyps a sexually . III . Flame cells in platyheliminthes help in osmoregulation and excretion . IV. In nonchordates , central nervous system is ventral , solid and double . V . Pinnae are present in mammals .

Read the statements regerding echinoderms and choose th correct option (i) All are marine with organ system level of organisation (ii) Adults are bilaterally symmetrical (iii) They are dioecious (iv) Fertilization is internal an indirect development is observed (v)Triploblastic and acoelomate animals

Read the following reactions and choose the correct option (i) "Pepsinogen"overset(HCl)rarr " Pepsin " (ii) "Proteins" overset("pepsinogen")rarr "Proteoses + Peptones " (III) "Trypsinogen "overset(HCl)rarr " Trypsin " (Iv) " Chymotrypsinogen" overset("enterokinase")rarr"Chymotrypsin " (v ) "Peptones"overset("trypsin")rarr "Dipeptides"