Zoology Botany MCQ
Q151. Who discovered the insecticidal properties of DDT
(a) Othmanzedicer
(b) R.H. Painter
(c) Paul Muller
(d) Rachel Carson
Answer: (c) Paul Muller
Q152. How many elements are said to be essential for the growth of crop plants
(a) 12
(b) 16
(c) 20
(d) 22
Answer: (b) 16
Q153. What is the distance of distinct vision (DDV) of a normal human eye
(a) 15 cm
(b) 25 cm
(c) 30 cm
(d) 40 cm
Answer: (b) 25 cm
Q154. The most numerous, heterogeneous and versatile macromolecules of cells are
(a) Proteins
(b) Lipids
(c) Carbohydrates
(d) All of these
Answer: (a) Proteins
Q155. Heparin, the natural anticoagulant, is an example of
(a) Structural polysaccharides
(b) Conjugated protein
(c) Mucopolysaccharides
(d) Storage polysaccharides
Answer: (c) Mucopolysaccharides
Q156. A plant bud is
(a) an embryonic shoot
(b) an embryonic leaf
(c) an endosperm
(d) a seed
Answer: (a) an embryonic shoot
Q157. The average blood flow through kidneys per minute is
(a) 200 cc
(b) 500 cc
(c) 800 cc
(d) 1200 cc
Answer: (d) 1200 cc
Q158. Plants which grow on saline soils are known as
(a) Xerophytes
(b) Hydrophytes
(c) Halophytes
(d) Succulents
Answer: (c) Halophytes
Q159. Which of the following organisms fix nitrogen in aquatic ecosystems
(a) Fungi
(b) Chemoautotrophs
(c) Cyanobacteria
(d) Phytoplankton
Answer: (c) Cyanobacteria
Q160. Insulin is secreted from which gland or organ of human body
(a) Kidney
(b) Liver
(c) Small Intestine
(d) Pancreas
Answer: (d) Pancreas
Q161. Which of the following is a plant hormone
(a) Melatonin
(b) Gastrin
(c) Cytokinin
(d) Cholecystokinin
Answer: (c) Cytokinin
Q162. Who had proposed for the first time the double helix model of DNA
(a) Watson and Crick
(b) Fisher and Haldoni
(c) Lamark and Darwin
(d) Hugo de Vries
Answer: (a) Watson and Crick
Q163. Chlorophyll contains
(a) Iron
(b) Copper
(c) Magnesium
(d) Manganese
Answer: (c) Magnesium
Q164. Lichens are the best indicator of
(a) Air pollution
(b) Water pollution
(c) Soil pollution
(d) Noise pollution
Answer: (a) Air pollution
Q165. The non-biotic pollutant of underground water is
(a) Bacteria
(b) Algae
(c) Arsenic
(d) Viruses
Answer: (c) Arsenic