The lower leaves turn yellow and in some crops they quickly start drying up as if suffering from shortage of water, stunted growth, leaves & fruits shedding & whole plant becomes yellow, are deficiency symptoms of:_________?

Related Mcqs:

1. calcium is immobile in plants. Therefore, under conditions of deficiency, young tissue is affected first. calcium deficiency symptoms are:

   A. Death of terminal buds; roots tips also affected
   B. Abnormal dark green appearance of foliage
   C. Premature shedding of  blossoms & buds & weakened stem
   D. All of the above

   Submitted by: Shafiq-ur-Rehman

2. Chemicals, used for controlling the disease of crops, fruits & vegetables is___________ & chemical prepared for controlling insect-pests ——————-:

   A. Insecticides—Herbicides
   B. Fungicides—Insecticides
   C. Weedicides—insecticides
   D. None of the above

   Submitted by: Shafiq Rehman

3. Purpling of leaves is common deficinary symptoms of __________________?

   A. Phosphorus
   B. Iron
   C. Potassium
   D. Nitrogen

4. A condition of green plant in which they become unhealthy and pale yellow in colour in known as_________________?

   A. Chloroplast
   B. Chromoplast
   C. Leucoplast
   D. Chlorsis

5. A reproductive part of the plant which is responsible for the production of fruits and seeds is called ________________?

   A. Corolla
   B. Calyx
   C. Flower
   D. All the above

6. Items needed for synthesis of plant food in green leaves are _________ & the process through which it takes place is called photosynthesis:

   A. Sunlight
   B. Chlorophyll
   C. Water & plant nutrients
   D. All of the above

   Submitted by: Shafiq Rehman

7. In forage, crops, ideal plant type consists of ______________________?

   A. Tall, leafy, high leaf/stem ratio
   B. Dwarf stature
   C. Late resistance to disease
   D. Dwarf, late green

8. All harvested crops remove plant nutrients from the soil. Whether used for _______________; the various crop products are often consumed far away from the production sites, some times thousands of kilometers away in another country.

   A. Food
   B. Feed
   C. industrial raw materials
   D. All of these

   Submitted by: Shafiq Rehman

9. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

   A. Mull
   B. Mulch
   C. Mycorrhizae
   D. Muck

   Submitted by: Shafiq Rehman

10. Which one of the following is a yellow, crystalline and water soluble compound_______________________?

    A. Riboflavin
    B. Niacin
    C. Cholecaliferol
    D. Folic acid