Two
Three
Four
Five
✅ The correct answer is option B.
Biology
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32. Oxygen accounts for ____ % of totals human body mass:
65%
18%
10%
3%
✅ The correct answer is option A.
33. The site/s where most of the uptake of water and minerals take place is/are
Root hairs
Root cells
Underground stem
All of these
✅ The correct answer is option A.
34. The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called:
An organ
A molecule
Tissue
Both a and c
✅ The correct answer is option B.
35. The uptake of water in plants involves
Active transport
Passive transport
Both of these
None of these
✅ The correct answer is option B.
36. Which one is a micromolecule?
Polysaccharide
Protein
Hemoglobin
ATP
✅ The correct answer is option D.
37. The membrane of vacuoles is known as
Coloplast
Tonoplast
Tanoplast
All of these
✅ The correct answer is option B.
38. A structure formed by groups of similar cells organized into loose sheetsor bundles performing similar functions is called as:
An organ
An organism
A Tissue
A Cell
✅ The correct answer is option C.
39. The diffusion of ions along with water also takes place by mass flow system along the ______ path
Tonoplast
Apoplast
Symplast
Vacuolar
✅ The correct answer is option B.
40. The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called
Homeostasis
Hemostasis
Osmoregulation
Thermoregulation
✅ The correct answer is option C.