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The following question based on physiology of plants, humans and animals topic of general science mcq
- Food prepared by plant is transported to different parts of plant through phloem.
- Water and minerals in plants are transported through xylem.
- The cell wall of xylem cell is rich in lignin.
(a) 1 and 3
(b) 1 and 2
(c) 2 and 3
(d) 1, 2 and 3
The correct answers to the above question in:
Answer: (d)
The food prepared by plant is transported through phloem, while water and minerals are transported through xylem whose cell wall is rich in lignim
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Read more biology Based General Science Questions and Answers
Question : 1
Nucleated part of nerve cell is called
a) dendrites
b) axon
c) cyton
d) None of the above
Answer »Answer: (c)
Question : 2
Two pigment system theory of photosynthesis was proposed by or Concept of evidence for existence of two photosystems in photosynthesis was given by
a) Blackman
b) Emerson
c) Hill
d) Arnon
Answer »Answer: (b)
The discovery of the Emerson effect stated that one group of pigments absorbs light of both shorter and longer wavelengths (more than 680 nm) and another group of pigments absorbs light on only shorter wavelengths (less than 680 nm).
These two groups of pigments are known as pigment systems or photosystems.
Question : 3
Study the following statements :
- Control room of the cell is Nucleus
- Nucleus was discovered by Robert Brown.
- Nuclear envelope is absent in bacteria.
a) 1 and 2
b) 1 only
c) 2 only
d) 1, 2 and 3
Answer »Answer: (d)
The nucleus is the control room of the cell as it contains the genome which gets expressed to give the phenotype.
The nucleus of the cell was discovered by Robert Brown in 1833. Bacteria are prokaryotes, they lack the nuclear envelope and their genetic material lies in the cell cytoplasm.
Question : 4
Alternate type of phyllotaxy is found in
a) mustard
b) china rose
c) sunflower
d) all of these
Answer »Answer: (d)
Question : 5
Meristematic tissues are found in
a) both roots and stems
b) only stems of the plants
c) in all growing tips of the plant body
d) only roots of the plants
Answer »Answer: (c)
Question : 6
The ultimate gain of light reaction is
a) NADPH2
b) only ATP
c) ATP and NADPH2
d) only O2
Answer »Answer: (c)
The ultimate gain of light reaction is ATP & NADPH2 .
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