Ques. In protoplast fusion techique which of the following enzymes are used
(a) Cellulase and pectinase
(b) Amylase and pectinace
(c) Lipase and pectinace
(d) Amylase and lipase
Ans. (a)
Ques. The sex organs of Pteris which develops on ventral surface of prothalli and intermingled with rhizoids are
(a) Antheridia
(b) Archegonia
(c) Sorus
(d) Sporangia
Ans. (a)
Ques. What type of movements occur during the opening of flowers in (A) Oenothera and tobacco and (B) Oxalis and sunflower
(a) (A) nyctinastic and (B) photonastic
(b) (A) Photonastic and (B) nyctinastic
(c) Both photonastic
(d) Both nyctinastic
Ans. (a)
Ques. In which stage of division the centromere of a chromosome appears divided into two parts
(a) Early prophase
(b) Late prophase
(c) Metaphase
(d) Anaphase
Ans. (c)
Ques. Minimum individuals which die from the population per unit time under ideal ecological conditions is called
(a) Ecological mortality
(b) Population crash
(c) Death rate potential
(d) Carrying capacity
Ans. (c)
Related: mcq Digestive system physiology
Ques. Thermal algae are those which grow
(a) In hot water springs where temperature is around 70°C
(b) In deserts where temperature is around 70°C
(c) In tropical regions of world where temperature is uaually high
(d) On rocks exposed to high temperature
Ans. (a)
Ques. Which of the following proteins helps the muscle to return to its resting length after muscle has been contracted or stretched?
(a) Myocin
(b) Tropomyosin
(c) Troponin
(d) Titin
Ans. (d)
Ques. What is the characteristics of the gametangia of Ulothrix
(a) That the antheridum is present but archegonia are absent
(b) That the archegonium is present but antheridia are absent
(c) Both (a) and (b) are present
(d) Both (a) and (b) are absent
Ans. (d)
Ques. An extreme example of latency in which the DNA of the phage is integrated with the DNA of host cell chromosome is
(a) Prophage
(b) Attenuated virus
(c) Lysogeny
(d) Lysis
Ans. (c)
Ques. What is true regarding mammary glands?
(a) Rabbits are provided with four pairs of abdominal mammary glands
(b) A pair of mammary glands in present between forelegs in elephants
(c) A pair of mammary glands is present between hind legs in donkeys
(d) All the above are correct
Ans. (d)
Ques. Purple cabbage leaves do not loose their colour in cold water but do so in boiling water because
(a) The plasma membrane gets killed in boiling water
(b) Hot water can enter the cells readily
(c) The pigment is not soluble in cold water
(d) The cell wall is killed in boiling water
Ans. (a)
Related: Communication System (Physics) MCQs
Ques. Which of the following also enters the lungs at the next inspiration?
(a) Fresh air from the dead space
(b) A part of foul air left in the dead space
(c) Residual air
(d) None of the above
Ans. (b)
Ques. In both transpiration and evaporation water is lost in the form of vapour yet they differ because
(a) Both transpiration and evaporation are similar but the rate of water loss differs
(b) Frequency of water loss is different in both of them
(c) Transpiration is a physical process and evaporation is a physiological process
(d) Transpiration is a physiological process and evaporation is a physical process
Ans. (d)
Ques. The foemation of gametophyte like structure from a sporophyte without the formation of spore is known as
(a) Parthenogenesis
(b) Azygospory
(c) Apospory
(d) Apogamy
Ans. (c)
Ques. An organism that grows on other organisms but does not draw nourishment from them is called
(a) Parasite
(b) Symbiont
(c) Epiphyte
(d) Saprophyte
Ans. (c)
Ques. The rate of respiration of young maturing seeds is quite high but as water contents decreases during further maturation, respiration
(a) Remains high
(b) Stops completely
(c) Increases steadily
(d) Decreases steadily
Ans. (d)
Related: Optics (Physics) Objective Questions
Ques. The greatest evolutionary change enabling the land vertebrates to be completely free from water was the development of
(a) Four legs
(b) Lungs
(c) Shelled eggs and internal fertilization
(d) Four chambered heart
Ans. (c)
Ques. What is true regarding Sedative and Tranquilliser ?
(a) Sedative reduce tension and Trnaquilliser reduce anxiety
(b) Trnaquillisers induce sleep and Sedative reduce tension
(c) Trnaquillisers reduce tension and Sedative induce sleep
(d) Both cause loss of sensation
Ans. (c)
Ques. Opiates narcotics are
(a) Morphine, codein, heroin
(b) Morphine, barbiturates, caffeine
(c) Codein, heroin, cocaine
(d) Cocaine, caffeine, codein
Ans. (a)
