Biology - Online Test
Q1. Insulin is used to treat
Answer : Option D
Explaination / Solution:
Insulin is a hormone released by pancreas that control sugar level in blood. Diabetic patients take insulin in form of injection to control blood sugar level.
Q2. Expended form of WHO is
Answer : Option D
Explaination / Solution:
WHO stands for world health organization.This organization take care of spread of different disease world over.
Q3. The net direction and rate of osmosis depends on
Answer : Option D
Explaination / Solution:
The diffusion of water across a semi-permeable membrane from high concentration of water (or low solute concentration) to low concentration of water (or high solute concentration) is called osmosis.
The net direction and rate of osmosis depends on two factors: concentration gradient and pressure gradient.
Q4. Fibroblasts, macrophages and mast cells are present in
Answer : Option D
Explaination / Solution:
Apart from being connective tissue, Areolar tissue is also protective in nature. It has large number of fibroblast cells which produce fibres. Mast cells, plasma cells and macrophages help to protect against pathogens and aid in tissue repair.
Q5. Who is called as “Father of taxonomy”
Answer : Option D
Explaination / Solution:
Carl Linnaeus. Carl Linnaeus, also known as Carl von Linné or Carolus Linnaeus, is often called the Father of Taxonomy. His system for naming, ranking, and classifying organisms is still in wide use today (with many changes
Q6. The hormone causing release of milk after the birth of young one is :
Answer : Option D
Explaination / Solution:
Mammary glands start releasing milk after parturition. The hormone causing release of milk after the birth of young one is Oxytocin.
Q7. Stage of a bacterial growth just after inoculation will be:
Answer : Option B
Explaination / Solution:
Leg phase of growth is initial stage of growth during which growth takes place slowly. Bacterial growth just after addition into nutrient medium occurs slowly. So, it is in leg phase of growth.
Q8. The deficiency symptoms in nitrogen,potassium, magnesium is clearly visible first in
Answer : Option C
Explaination / Solution:
Nitrogen deficiency symptoms include poor plant growth, and leaves that are pale green or yellow.
Symptoms of potassium deficiency in plants include brown scorching and curling of leaf tips as well as chlorosis (yellowing) between leaf veins.
The main symptom of magnesium deficiency, chlorosis, or yellowing between leaf veins.
Q9. Which among the following is not in the wall of alimentary canal?
Answer : Option B
Explaination / Solution:
The wall of alimentary canal from oesophagus to rectum possesses four layers namely serosa, muscularis, sub-mucosa and mucosa.
Q10. Skin in our body is an example of
Answer : Option B
Explaination / Solution:
Innate immunity is specific type of defense that is present at the time of birth. They provide different types of barrier to the entry of foreign elements. Skin in our body is main barrier which prevent entry of microbes in our body.
