Tag: biology

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Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

Phloem transports sugar in the form of

  1. Glucose

  2. Sucrose

  3. Cellulose

  4. Starch
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sugars are synthesized as glucose and fructose, translocated as sucrose and stored as starch for long-term storage in plants. Translocation of organic nutrients from the region of source or supply to the region of utilization is mostly in the form of sucrose. Sucrose is water soluble and more efficient in energy storage as compared to the glucose and fructose as well as glucose is more reactive and hence, phloem transports sugar in the form of sucrose.

Thus, the correct answer is option B.

Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

Food is transported to different parts of plant through

  1. Xylem

  2. Phloem

  3. Pith

  4. Cortex
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In plant transport system no heart, no blood, and no other circulatory system, but plants do need a transport system to move food, water, and minerals around. They use two different systems then xylem moves water and solutes from the roots to the leaves and phloem moves food substances from leaves to the rest of the plant, then phloem is the transporting system of food to the plants.

So, the correct option is B.

Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

Choose the correct answers from the alternatives given.
Which of the following tissues transports water and nutrients within the plant?

  1. Epidermal tissue

  2. Ground tissue

  3. Meristem

  4. Vascular tissue
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Xylem is the chief water and nutrients conducting tissues of the plants. These xylem tissues form the part of vascular tissues. These conduct water and nutrients from the roots to the top of the plants i.e. to the stem and the leaves. Along with acting as a conducting tissue, xylem also provides the mechanical strength to the plant parts.

Hence, the correct answer is 'Vascular tissue'.

Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

The phenomenon of osmosis is involved in the diffusion of water from

  1. One cell to another

  2. Soil to root

  3. Xylem vessel to xylem vessel

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Osmosis is the process of flow of fluid from higher to lower concentration through the semi-permeable membrane. The wall of xylem vessels behaves as the semi-permeable membrane so diffusion of water from one xylem vessel to another xylem vessel can be called the phenomenon of osmosis.

In all other three cases, there is no presence of semi-permeable membrane so, it is the simple diffusion process.
So, the correct answer is the 'xylem vessel to xylem vessel'.

Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

........ conducts water and ions whereas ........ conducts food.

  1. Phloem; xylem

  2. Xylem; phloem

  3. Cambium; phloem

  4. Xylem; cambium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Vascular tissues help in transportation such as xylem and phloem. The xylem carries water and dissolved ions from the root to stem and leaves and phloem carry dissolved sugar from the leaves to all other parts of the plants. So, the correct answer is "xylem; phloem.
Multiple choice biology food components and nutrition effect on general health growth and development in young people nutrient deficiency diseases

Inadequate protein intake leads to Kwashiorkor. The subsequent edema is most closely related to inadequate synthesis of which protein

  1. Gamma globulin

  2. Glucagon

  3. Insulin

  4. Albumin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Kwashiorkor is caused by severe protein deficiency. Albumin is the primary plasma protein responsible for maintaining oncotic pressure; its reduced synthesis leads to fluid leakage into tissues, causing edema.

Multiple choice biology food components and nutrition effect on general health growth and development in young people nutrient deficiency diseases

Protein-energy malnutrition is also called as 

  1. Kwarshiorker

  2. Marasmus

  3. Rickets

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Protein-energy malnutrition is also called marasmus which is mainly observed in infants and children of age around 5 years old. The skin of the child becomes dry, thin and wrinkled, a deficiency also impairs growth and replacement of tissue, the body becomes thin and mental retardation is observed.

So, the correct option is 'Marasmus'

Multiple choice biology food components and nutrition effect on general health growth and development in young people nutrient deficiency diseases

Marasmus is caused by

  1. Obsety

  2. Dwarfism

  3. Prolonged starvation

  4. Deficiency of vitamin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Marasmus is a disorder that occurs due to the deficiency of protein as well as calories mean prolonged starvation leads to it. Usually occurs in children age 0 to 5 and the child becomes very thin, becomes dehydrated, shrinks the stomach, etc.

So, the correct option is 'Prolonged starvation'

Multiple choice biology food components and nutrition effect on general health growth and development in young people nutrient deficiency diseases

The following are the symptoms of Kwashiorkor and marasmus. Categorize them correctly:-
I. It is caused by the deficiency of protein in the diet.
II. It is caused by the prolonged deficiency of protein and calories in the diet. 
III. It affects infants under one year of age
IV It commonly affects babies between 1-3 years of age.
V. Subcutaneous fat persists.
VI. Subcutaneous fat is used up, making ribs very prominent. 

VII. Skin and hair change colour.
VIII. May caused due to lack of protein in mother milk.
IX. No edema occurs.
X. No change in skin and hair colour. 

  1. Kwashiorkor - I, IV,V,VII, VIII. Marasmus - II, III,VI, IX,X

  2. Kwashiorkor - I,II,V,VI,VIII, IX. Marasmus - III. IV, VII, X

  3. Kwashiorkor - II,III,VI, IX, X. Marasmus - I, IV, V, VI, VIII

  4. Kwashiorkor - III, IV, VII, X. Marasmus - I, II, V, VI, VIII, IX
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Kwashiorkor, also known as “edematous malnutrition” because of its association with edema (fluid retention), is a nutritional disorder most often seen in regions experiencing famine. It is a form of malnutrition caused by a lack of protein in the diet. People who have kwashiorkor typically have an extremely emaciated appearance in all body parts except their ankles, feet, and belly, which swell with fluid. Kwashiorkor is most common in countries where there is a limited supply or lack of food. It is mostly found in children and infants in sub-Saharan Africa, Southeast Asia, and Central America. Its symptoms include (1) change in skin and hair colour (to a rust colour) and texture (2) edema (swelling) of the ankles, feet, and belly.

  • Marasmus is a severe form of protein-energy malnutrition that results when a person does not consume enough protein and calories. Without these vital nutrients, energy levels become dangerously low and vital functions begin to stop. Both adults and children can have marasmus, but it most often affects young children in developing countries. Over time, a person with marasmus will lose body tissue and fat in their face. Similarly, their bones become visible under their skin, and folds of skin develop from the loss of body mass. Their eyes may appear sunken.

So, the correct answer is 'Kwashiorkor - I, IV V VII, VIII. Marasmus - II. III. VI, IX,X'.