Multiple Choice QuestionsAdding salt and sugar to food substances helps in preserving them for a longer duration. It is because excess salt and sugar
cause rupturing of microbial cells
cause change in the shape of microbial cells
remove water from food
plasmolyse the microbial cells
Root cap is absent in
hydrophytes
mesophytes
halophytes
xerophytes
A.
hydrophytes
Hydrophytes are those plants which live in water and adjust with their surroundings. They either remain fully submerged in the water like Hydrilla, Valisineria, etc. or most of their body parts remain under the water like trapa, lotus, etc. water lilies, sedges, are other important water plants. Root caps contain startocytes which are involved in gravity precipitation in plants. It protects the growing tip in plants. It protects the growing tip in plants. It is absent in hydrophytes, as it grows in or water
Hormone Adrenaline
helps the body to adjust stress level when one is very angry or worried
helps control height
helps control balance of electrolytes in the body
helps control level of sugar in the blood
The thumb of humans moves more freely than other fingers due to the presence of
gliding joint
hinge joint
saddle joint
pivotal joint
A common characteristic feature of plant sieve-tube cells and mammalian erythrocytes is
absence of chloroplast
absence of cell wall
presence of haemoglobin
absence of nucleus
Which of the following is immovable joint?
Pivot-joint between head and neck
Hinge-joint of elbow
Joint between skull bone
Ball and socket joint
Which blood corpuscle help in coagulation of blood?
Lymphocyte
Platelets
Monocyte
Red blood corpuscles
In yeast asexual reproduction takes place through
Budding
Fission
Both (1) and (2)
None of these
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