Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex
The cells of the quiescent centre are characterised by

  1. having dense cytoplasm and prominent nuclei

  2. having light cytoplasm and small nuclei

  3. dividing regularly to add to the corpus

  4. dividing regularly to add to tunica
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cells of the quiescent centre are characterised by 'light cytoplasm and small nuclei'.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Choose the correct answers from the alternatives given :
Plant roots function to

  1. anchor the plant

  2. store the products of photosynthesis

  3. produce hormones that stimulate stem growth

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Root is the most important organ of a plant which generally lies below the soil in the vascular plants.

The main functions of the root are:
a. It anchors the plants in soil and thus provides mechanical support to plants to stand upright.
b. Photosynthesis products are usually stored in roots. eg. Raddish, carrots etc.
c. Roots synthesize certain hormone that helps in the growth of the plant.

So the correct answer is "All of the above"

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Choose the correct answers from the alternatives given.
When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf

  1. Xylem would be on top and the phloem on the bottom

  2. Phloem would be on top and the xylem on the bottom

  3. Xylem would encircle the phloem

  4. Phloem would encircle the xylem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vascular bundles are scattered in the spongy parenchyma. These can be seen in the veins and the midrib of the leaves. The dicot leaves possess reticulate venation in which veins form a network. The xylem forms the top layer and phloem is present at the bottom in the arrangement of the vascular tissues. The veins vary in thickness in the reticulate venation.

Hence, the correct answer is 'Xylem would be on top and the phloem on the bottom'.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Water from the undigested food is absorbed mainly in the

  1. Stomach

  2. Food pipe

  3. Small intestine

  4. Large intestine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The large intestine, also known as the large bowel, is the last part of the gastrointestinal tract and of the digestive system.Water is absorbed here from the undigested food and the remaining waste material is stored as feces before being removed by defecation.
  • Hence water from the undigested food is absorbed mainly in the large intestine.
  • So,the correct answer is 'Large intestine'.
Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Which of the following is not the function of large intestine?

  1. Absorption of water

  2. Nutrient absorption

  3. Secretion of mucus to lubricate faeces

  4. Temporary storage faeces in rectum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The 4 major functions of the large intestine are:
  • Re-absorption of water and mineral ions such as sodium and chloride.
  • Formation and temporary storage of faeces.
  • Maintaining a resident population of over 500 species of bacteria.
  • Bacterial fermentation of indigestible materials.
  •  So, the correct answer is "Nutrient absorption".
Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Feces are stored in which of the following part of the body before excretion?

  1. Anus

  2. Large intestine

  3. Small intestine

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The large intestine, also called as the colon or the large bowel, is the last part of the digestive system in vertebrates. Water is absorbed here and the remaining waste material is stored as feces before being removed by defecation.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

The colon extracts .......... from solid wastes.

  1. Water

  2. Salt

  3. Both A and B

  4. Sodium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The colon is the last part of the digestive system in most vertebrates. It extracts water and salt from solid wastes before they are eliminated from the body and is the site in which large bacterial fermentation of unabsorbed material occurs. Unlike the small intestine, the colon does not play a major role in absorption of foods and nutrients. 

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

The vermiform appendix is situated at the junction of

  1. Large intestine and small intestine

  2. Small intestine and duodenum

  3. Anus and rectum

  4. Stomach and duodenum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The vermiform appendix is also referred to as the vermix or the cecal appendix. It is a blind ended tube connected to the cecum, at the junction of large and small intestine. The appendix is usually located in the right lower quadrant of the abdomen, near the right hip bone.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Vermiform appendix is a part of

  1. Alimentary canal

  2. Nervous system

  3. Vascular system

  4. Reproductive system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The vermiform appendix is also referred to as the cecal appendix. It is a blind ended tube connected to the cecum. The appendix is usually located in the right lower quadrant of the abdomen, near the right hip bone. Its position within the abdomen corresponds to a point on the surface known as McBurney's point.