Zoology Botany MCQ

Q151. Who discovered the insecticidal properties of DDT
(a) Othmanzedicer
(b) R.H. Painter
(c) Paul Muller
(d) Rachel Carson

Q152. How many elements are said to be essential for the growth of crop plants
(a) 12
(b) 16
(c) 20
(d) 22

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

Q154. The most numerous, heterogeneous and versatile macromolecules of cells are
(a) Proteins
(b) Lipids
(c) Carbohydrates
(d) All of these

Q155. Heparin, the natural anticoagulant, is an example of
(a) Structural polysaccharides
(b) Conjugated protein
(c) Mucopolysaccharides
(d) Storage polysaccharides

Q156. A plant bud is
(a) an embryonic shoot
(b) an embryonic leaf
(c) an endosperm
(d) a seed

Q157. The average blood flow through kidneys per minute is
(a) 200 cc
(b) 500 cc
(c) 800 cc
(d) 1200 cc

Q158. Plants which grow on saline soils are known as
(a) Xerophytes
(b) Hydrophytes
(c) Halophytes
(d) Succulents

Q159. Which of the following organisms fix nitrogen in aquatic ecosystems
(a) Fungi
(b) Chemoautotrophs
(c) Cyanobacteria
(d) Phytoplankton

Q160. Insulin is secreted from which gland or organ of human body
(a) Kidney
(b) Liver
(c) Small Intestine
(d) Pancreas

Q161. Which of the following is a plant hormone
(a) Melatonin
(b) Gastrin
(c) Cytokinin
(d) Cholecystokinin

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

Q163. Chlorophyll contains
(a) Iron
(b) Copper
(c) Magnesium
(d) Manganese

Q164. Lichens are the best indicator of
(a) Air pollution
(b) Water pollution
(c) Soil pollution
(d) Noise pollution

Q165. The non-biotic pollutant of underground water is
(a) Bacteria
(b) Algae
(c) Arsenic
(d) Viruses

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