Biology - Mock Test 31

Question 301

Approximately how many times each day do our heart valves open and close normally

A) 10000 times B) 100000 times C) 150000 times D) 200000 times

---

No Details

Question 302

Normal blood pressure of man is

A) 80/120 mm Hg B) 90/140 mm Hg C) 120/160 mm Hg D) 85/120 mm Hg

---

No Details

Question 303

Sugarcane plants are usually propagated by vegetative means because

A) they do not produce seeds B) it is possible to maintain genetic quality C) the incidence of disease may be reduced D) none of the above

---

No Details

Question 304

The pigment involved in photosynthetic activity is

A) anthocyanin B) fuexanthin C) carotenoid D) chlorophyll

---

No Details

Question 305

Free-living nitrogen fixing microorganisms are

A) Rhizobia B) Soil fungi C) Vesicular arbuscular mycor-rhiza D) Blue green algae

---

No Details

Question 306

Vegetable oils are converted into solid fat (ghee) by

A) Hydrolysis B) Addition of agar C) Oxidation using air and a catalyst D) Hydrogenation

---

No Details

Question 307

A drug which helps in controlling fever is

A) Ibuprofen B) Penicillin C) Paracetamol D) Corticosteroid

---

No Details

Question 308

Identify the correct statement with respect to Biogas.

A) Mixture of gases from volcanoes B) Gas produced from certain crude oil wells v C) Gas produced by incomplete combustion of biomass D) Gas produced by fermentation of biomass

---

No Details

Question 309

Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of

A) Carbohydrates B) Peptides C) Polyhydric alcohols D) Alkaloids

---

No Details

Question 310

Which one of the following four secretions is different from the remaining three in regard to its mode of transport from he source gland to the site of action

A) Saliva B) Sweat C) Bile D) Epinephrine

---

No Details