A. Petiole but not in lamina
B. Only mid rib of lamina
C. Leaf tip and leaf margin
D. Stems tips only
Related Mcqs:
- Exposure of human beings to high energy from nuclear power plants can cause:
A. Cancer of skin and bone
B. Cancer of heart and brain
C. Cancer of skin and bone marrow
D. Cancer of kidneys - Today, concentration of green house gases is high because of:
A. Use of refrigerator
B. Increased combustion of oil and coal
C. Deforestation
D. All the above - The non-green plants are as important as the green plants because they:
A. Cause human disease
B. Cause diseases of other plants
C. Are useful in several industries
D. Bring about decomposition of dead animals and plant remains - Those chemicals which are produced by plants and affect other plants are broadly called:
A. Depresants
B. Allomones
C. Allelochemics
D. Kairomones - Among the plants listed, point out one that does not fit into ecological group represented by the other plants:
A. Acacia
B. Aloe
C. Euphorbia
D. Rhizophora - Among the plants listed, point out one that does not fit into biological group represented by other plants
A. Euphorbia
B. Acacia
C. Vallisneria
D. Aloe - Realising the need for a better management policy for wildlife, a high powered Wildlife, a high powered Wildlife Enquiry Committee, constituted by the Government of Pakistan presented their (draft) report in 1970, following which all the provinces and administrative unit promulgated their own Wildlife Act within administrative units promulgated their own Wildlife Act within a span of two years _______
A. 1974 and 1975
B. 1975 and 1976
C. 1976 and 1977
D. None of these - It is thought that the concentration of CO2 by the year 2040 shall reach:
A. 400 ppm
B. 500 ppm
C. 475 ppm
D. 450 ppm - It is thought that the concentration of CO2 in the year 1890 was around:
A. 245 ppm
B. 275 ppm
C. 215 ppm
D. 230 ppm - Acid rain is mainly caused by increased concentration (in atmosphere) of:
A. Ozone and dust
B. NH3 and SO3
C. CO and SO3
D. NO2 and SO2
The correct answer to the question: "Exposure of plants to high fluoride concentration results in necrosis or chlorosis characteristics in:" is "Leaf tip and leaf margin ".