3- Presence of remnant of pelvic girdle in whale and snake although they never have legs, shows evidence from:
A. Biochemical evidence
B. Paleontology
C. Vestigial organs
D. Embryology
View Answer
Answer : C. Vestigial organs
Description
4- Photosynthetic bacteria liberate:
A. CO2
B. H2S
C. Sulphur
D. Hydrogen
View Answer
Answer : B. H2S
Description
5- Plasma membrane is:
A. Permeable
B. Selective permeable
C. Sub permeable
D. Non permeable
View Answer
Answer : B. Selective permeable
Description
6- Water is the most abundant compound in living organism its amount varies from:
A. 30% to 60%
B. 50% to 60%
C. 10% to 20%
D. 70% to 90%
View Answer
Answer : D. 70% to 90%
Description
7- The phase in which bicuspid and tricuspid valves open & semilunar valve close which produce 2nd heart sound (dub or dup). This the phase is known as:
A. Atrial diastole
B. Ventricular diastole
C. Ventricular systole
D. Contraction of heart
View Answer
Answer : B. Ventricular diastole
Description
8- Phenotypic ratio of law of independent assortment of genes:
A. 9:7
B. 13:3
C. 9:3:3:1
D. 12:3:1
View Answer
Answer : C. 9:3:3:1
Description
9- Triose and glycerol is used in the synthesis of:
A. Carbohydrate
B. Protein
C. Lipid
D. Fatty acid
View Answer
Answer : D. Fatty acid
Description
10- They are inhibitors of key enzymes in the nervous system:
A. Calcium and Potassium
B. Substrate and activators
C. Magnesium and manganese
D. Pesticides DDT and parathione
View Answer
Answer : D. Pesticides DDT and parathione
Description
11- Plant hormone associated with apical dominance is:
A. Gibberellin
B. Auxin
C. Cytokinin
D. Ethene
View Answer
Answer : B. Auxin
Description
12- Bolus enters the oesophagus not the traches due to presence of:
A. Epiglottis
B. Roof palate
C. Buccal cavity
D. Tongue
View Answer
Answer : C. Epiglottis
Description
13- Net ATP produced at the end of glycolysis:
A. 2 ATP
B. 4 ATP
C. 6 ATP
D. 8 ATP
View Answer
Answer : A. 2 ATP
Description
14- Class turbellaria, Trematoda, Cestoda belongs to phylum:
A. Echinodermata
B. Porifera
C. Aschelminthes
D. Platyhelminthes
View Answer
Answer : D. Platyhelminthes
Description
15- Spikelet inflorescence is the characteristic of family:
A. Solanaceae
B. Rosaceae
C. Fabceae
D. Poaceae
View Answer
Answer : D. Poaceae
Description
16- Each myosin is surrounded by:
A. Motor nerves
B. Myosin head
C. 6-actin filaments
D. 4-actin filaments
View Answer
Answer : C. 6-actin filaments
Description
17- Synthesis of disaccharide by condensation two glucose joined by glycosidic linkage to form:
A. Liacitose
B. Fructose
C. Phosphate
D. Maltose
View Answer
Answer : D. Maltose
Description
18- White eyed trait in drosophila is due to:
A. Linkage
B. Mutati
C. Crossing over
D. Genome
View Answer
Answer : B. Mutati
Description
19- Enzymes are generally inactivated rapidly by exposure to UV high and also alpha, B rays because it alters the:
A. Quantity of enzyme
B. pH of enzyme
C. Shape of enzymes
D. Temperature of enzyme
View Answer
Answer : C. Shape of enzymes
Description
20- In frog New air drawn into bucco-pharyngeal cavity through nostrils and old air retained under pressure in:
