Everyday Science MCQs

5120 MCQs  (Page 414 of 512)

Attempt Everyday Science MCQs Quiz
Which of the following statement about the head of a chlorophyll molecule is incorrect?
A. It is a porphyrin ring or tetrapyrrole ring structure
B. It is flat, square and light absorbing
C. Composed of carbon and nitrogen atoms with magnesium as central metal ion, which is coordinated with nitrogen.
D. It is hydrophobic
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Molecular formula of chlorophyll ‘a’ molecule is___________?
A. C55h72o5n4mg
B. C55h70o6n4mg
C. C50h72o6n4mg
D. C55h70o5n4mg
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Which of the following pigment is Blue- green in colour?
A. Chlorophyll a
B. Chlorophyll b.
C. Chlorophyll c
D. Chlorophyll d.
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Cytoplasmic strands that extend through pores in adjacent cell walls are known as___________?
A. Pseudopods
B. Symplasts
C. Plasmodesmata
D. Pili
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In plants, the neighbouring cells are connected with one another by__________?
A. Plasmodesmata
B. Cell walls
C. Vacuoles
D. Both ‘a’ & ‘b’
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In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip.
A. Tonoplast
B. Apoplast
C. Symplast
D. Vacuolar.
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The membrane of vacuoles is known as__________?
A. Vacuoloplast
B. Tonoplast
C. Tanoplast
D. All of these
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The diffusion of ions along with water also takes place by mass flow system along the ________ path?
A. Tonoplast
B. Apoplast
C. Symplast
D. Vacuolar
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Active transport is dependent on____________?
A. Photosynthesis
B. Respiration
C. Photophosporylation
D. None of these
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There are __________ types of nutrients needed by plants besides light to carry out photosynthesis
A. Two
B. Three
C. Four
D. Five
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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