Micronutrients

Q. Good vision depends on adequate intake of carotene rich food.
Select the best option from the following statements.
(a)Vitamin A derivatives are formed from carotene.
(b)The photopigments are embedded in the membrane discs of the inner segment
(c)Retinal is a derivative of Vitamin A
(d)Retinal is a light absorbing part of all the visual photopigments.

1. (a), (c) and (d)
2. (b), (c) and (d)
3. (a) and (b)
4. (a) and (c)

Q.

Function of companion cells is:

1. Providing energy to sieve elements for active transport.

2. Loading of sucrose into sieve elements by passive transport.

3. Providing water to phloem.

4. Loading of sucrose into sieve elementsby active transport.

Q. Which among the following is a beneficial element but not included as micro or macroutrient required by certain higher plants?

1. Nitrogen
2. Phosphorus
3. Silicon
4. Potassium

Q. Elements that are required in amounts less than 10 mmole per kg of dry matter are termed as

1. macronutrients
2. both b & c
3. micronutrients
4. trace elements

Q. Which of the following element groups is present in plant tissue in less than 10 mmole per kg of dry matter?

1. Sodium, hydrogen, selenium and cobalt
   
2. Carbon, hydrogen, oxygen and nitrogen
   
3. Magnesium, manganese, molybdenum and nickel
   
4. Zinc, boron, iron and copper

Q. Which among the following is a wrong combination?

1. Nitrogen - amino acid
2. Iron - cytochrome
3. Nickel - carbonic anhydrase
4. Magnesium - chlorophyll

Q.

Carboxylation in the C3 plants requires the following enzyme-

1. Kinase

2. RuBisCO

3. Nitrogenase

4. -ketoglutarate dehydrogenase

Q.

The form of sugar transported through the phloem is

1. Sucrose

2. Fructose

3. Ribose

4. Glucose

Q. A mineral element present in cytochrome is

1. Mg
2. Mn
3. Cu
4. Fe

Q. A person on long hunger strike and surviving only on water will have

1. More sodium in urine
   
2. Less urea in urine
   
3. Less amino acids in urine
   
4. More glucose in blood
   

Q.

Write the uses and deficiency symptoms of different micronutrients essential for plants.

Q. Which of the following promote pollen germination and tube growth?

1. Starch
2. Boron
3. Mg
4. Potassium

Q. Which of the following is used as anti-transpirant?

1. Calcium carbonate
2. Phenyl mercuric acetate
3. Cobalt chloride
4. Naphthol acetic acid

Q. Etiolation of plants is caused when they

1. are grown in dark
2. have mineral deficiency
3. are grown in intense light
4. are grown in blue light

Q. Nitrogen fixing enzyme found in the root nodules of legumes is

1. Nitrogen esterase
2. Nitrogenase
3. Nitrasomonase
4. Nitrase

Q.

The minerals involved in water-splitting reaction during photosynthesis are

1. Magnesium and Chlorine

2. Potassium and Manganese

3. Manganese and Chlorine

4. Molybdenum and Manganese

Q. Bidirectional translocation of minerals takes place in:

1. Phloem
2. Cambium
3. Parenchyma
4. Xylem

Q. 10 gram of radioactive material of half life 15 years is kept in a box for 20 years. The disintegrated material is : 1) 10.2 g 2) 6.03 g 3)4.03 g 4) 12.6 g

Q. The deficiencies of micronutrients affect not only growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport:

1. Mn, Co, Ca
2. Cu, Mn, Fe
3. Ca, K, Na
4. Co, Ni, Mo

Q.

Is potassium a trace mineral?

Q. During photochemical phase of photosynthesis water splits during

1. Plasmolysis
2. Photolysis
3. Hydrolysis
4. Osmosis

Q.

Which of the following elements is not required by plants for their normal healthy growth?

1. Lead

2. Iron

3. Calcium

4. Magnesium

Q. what is importance of following process occurringduring photosynthesis in plants?
1)photolysis of water

Q. Good vision depends on adequate intake of carotene-rich food. Select the best option from the following statements.

I. Vitamin A derivatives are formed from carotene
II. The photopigments are embedded in the membrane discs of the inner segment
III. Retinal is a derivative of vitamin A
IV. Retinal is a light-absorbing part of all the visual photopigments

1. I, III and IV
2. I, and III
3. II, III and IV
4. I and II

Q.

Is cholesterol a micronutrient?

Q. Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by.

1. Pollens
2. Tapetum
3. Middle layers
4. Enodthecium

Q. In plant mineral nutrition, elements are called macro or micro-elements depending upon their

1. relative importance in plant growth
2. relative presence in plant ash
3. relative amount required in plants
4. relative availability in soil

Q. Find the odd one out with respect to micronutrients in plants

1. Nickel
2. Calcium
3. Iron
4. Zinc

Q. Which one of the following elements plays an important role in biological nitrogen fixation?

1. Molybdenum
2. Manganese
3. Copper
4. Zinc

Q. Which among the following are trace elements?

1. Nitrogen, phosphorus, molybdenum and copper
2. Manganese, iron, molybdenum and copper
3. Cobalt, selenium, sodium and silicon
4. Nitrogen, carbon, oxygen and phosphorus