Which of the following is a short day plant?

Related Mcqs:

1. Which of the following is a mangrove plant?

   A. Acanthus ilicifolius
   B. Avicennia offcinalis
   C. Ceriops roxburghiana
   D. All of these

2. Short and simple food chains are rare in the world and may be found in simple ecosystems like:

   A. Savanna
   B. Tundra
   C. Grassland
   D. Desert

3. The chemical produced by the host plant to protect themselves against fungal infection is:

   A. Toxin
   B. Hormone
   C. Phytotoxin
   D. Phytoalexin

4. The classification of plant groups on the basis of temperature differentiating four zone such as megatherms was proposed by:

   A. Clements
   B. Raunkiaer
   C. Odum
   D. Warming

5. When a plant of hot climate is transferred to colder regions, it gets an injury called:

   A. Chilling
   B. Thermal death
   C. Desiccation
   D. Freezing

6. The alpine forests are classed under the plant group called:

   A. Mesotherms
   B. Megatherms
   C. Microtherms
   D. Hekistotherms

7. Plant groups growing in zones where high temperature alternates with low temperature are called:

   A. Megatherms
   B. Hekistotherms
   C. Microtherms
   D. Mesotherms

8. The plant that has a characteristic component of the mangrove vegetation is:

   A. Rhizophora mangle
   B. Ficus religiosa
   C. Mangifera indica
   D. Prosopis specigera

9. The stems of submerged water plant are soft and weak because:

   A. They are absolutely devoid of xylem
   B. They totally lack phloem
   C. They do not have stomata
   D. The supporting tissues and xylem are feebly developed

10. Percentage of water left in the soil when a plant wilts is known as:

    A. Turgidity
    B. Wilting coefficient
    C. Field capacity
    D. Water retaining power of the soil