131) In F2 generation, the genotypic ratio of monohybrid cross is
A) 9:3:3:1
B) 3:1
C) 1:2:1
D) 3:1:3:9
View Answer
C) 1:2:1
Explanation:Genotypic ratio in monohybrid cross (Aa × Aa) = 1:2:1
132) The phase Omnis cellula c cellula, or cells arise from pre-existing cells was proposed by
A) Mendel
B) Virchow
C) Lamarck
D) None of the above
View Answer
B) Virchow
Explanation:”Omnis cellula e cellula” (cells from pre-existing cells) – Rudolf Virchow
Virchow
133) Transfer of pollen grains from another to stigma of the same flower is called
A) Cross pollination
B) Self pollination
C) Hydrophily
D) Anemophily
View Answer
B) Self pollination
Explanation:Transfer of pollen to stigma of same flower = Self-pollination
134) Growth of a plant in response to a light stimulus is known as
A) Geotropism
B) Hydrotropism
C) Phototropism
D) None of the above
View Answer
C) Phototropism
Explanation:Growth toward light = Phototropism
135) Plants which undergo the negative reproduction through roots
A) Colacasia and Ginger
B) Murraya Guava and Milingtonia
C) Bryophyllum and Scilla
D) None of the above
View Answer
B) Murraya Guava and Milingtonia
Explanation:Murraya, Guava, Milingtonia → vegetative reproduction through roots
Murraya, Guava and Milingtonia
136) The fluids secreted from seminal vesicles, prostate gland and Cowper’s gland collectively called seminal plasma. The sesmianal plasma along with sperm is called
A) Plasma
B) Semen
C) Placenta
D) None of the above
View Answer
B) Semen
Explanation:Seminal plasma + sperm = Semen
137) _____controls the movement of food and air towards their respective passages.
A) Epiglottis
B) Pharnyx
C) Nasal cavity
D) Trachea
View Answer
A) Epiglottis
Explanation:Epiglottis directs food to esophagus and air to trachea
Epiglottis
138) Muscular tissue present at the floor of the chest cavity is ____
A) Bronchi
B) Diaphragm
C) Trachea
D) Alveoli
View Answer
B) Diaphragm
Explanation:Floor of chest cavity = Diaphragm
139) In the absence of oxygen, glucose is converted to ethanol in
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