This set of Plant Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Plant Tissue Culture”.
1. Who introduced the concept called totipotency?
a) Agnes Arber
b) Alexander von Humboldt
c) Gottlieb Haberlandt
d) Gregor Mendel
View Answer
Explanation: The concept of totipotency was first introduced by Gottlieb Haberlandt, a German plant physiologist, in the year 1902. He inferred that each individual plant cell has the inherent potential to develop into a whole organism.
2. Totipotent cells can give rise to embryo only.
a) True
b) False
View Answer
Explanation: The given statement is incorrect. Totipotent cells can give rise to both embryo and placenta. Placenta is the extra embryonic cell that develops in the uterus during pregnancy. Totipotent cells show relatively high potency when compared to pluripotent and multipotent cells.
3. Which of the following factor does not influence totipotency?
a) Relative humidity
b) Nonreduced nitrogen
c) Source of explant
d) Light intensity
View Answer
Explanation: Totipotency can be influenced by several factors such as relative humidity, reduced nitrogen concentration in nutrient media, plant growth regulators, source and size of explant, light intensity, temperature etc.
4. What is the full form of pES cells?
a) Passive embryonic stem cells
b) Para embryonic stem cells
c) Pathogenetic embryonic stem cells
d) Parthenogenetic embryonic stem cells
View Answer
Explanation: The full form of pES is Parthenogenetic embryonic stem cells. It is a type of pluripotent cells that are derived from unfertilized eggs. Other types include induced pluripotent stem cell, true embryonic cells etc.
5. Which of the following statement is true about pluripotency?
a) Pluripotency is the ability of the cell to give rise to another specific cell type
b) It develops into primary germ cell layers
c) It develops into secondary germ cell layers
d) It is a phenomenon that describes cell’s impotency
View Answer
Explanation: Pluripotency is the ability of the cell to give rise to all cell types. The pluripotent cell develops into primary germ cell layers of the embryo and then consequently into all cell types of the adult body.
6. Dedifferentiation is the reversion of mature tissues into a meristematic state, forming callus.
a) True
b) False
View Answer
Explanation: The given statement is correct. Dedifferentiation is the phenomenon that involves the reversion of mature tissues into a meristematic state leading to the formation of undifferentiated callus. And the formed callus being developed into a whole plant organ is called redifferentiation.
Sanfoundry Global Education & Learning Series – Plant Biotechnology.
To practice all areas of Plant Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
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