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Question:- Rain water helps to increase the ____ to some extent. A. phosphorous contents B. nitrogen contents C. calcium contents D. potash contents
Answer:- Option C
Question:- Plants are killed in winter by frost A. because of desiccation and mechanical damage to the tissues B. because no photosynthesis takes place at such low temperature C. because respiration ceases at such low temperature D. because there is no transpiration
Answer:- Option A
Question:- One of the following is most suitable for study of mutations A. Haploids B. Diploids C. Tetraploids D. Polyploid
Answer:- Option A
Question:- Pulses are a good source of A. carbohydrates B. fats C. proteins D. vitamins
Answer:- Option C
Question:- Oxygen in our blood is transported by a protein named A. haemoglobin B. keratin C. collagen D. myoglobin
Answer:- Option A
Question:- Nymph is the name of young one of A. butterfly B. beetle C. housefly D. cockroach
Answer:- Option D
Question:- Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of A. hormones B. enzymes C. proteins D. vitamins
Answer:- Option B
Question:- Mutation is A. a factor responsible for plant growth B. a change which affects the offspring of F2 generation only C. a change that is inherited D. a change which affects the parents
Answer:- Option C
Question:- Pollination by wind is called A. anemophily B. hydrophily C. zoophily D. entomophily
Answer:- Option A
Question:- Pollen grains in plants are produced in A. roots B. leaves C. flower D. stem
Answer:- Option C
Question:- Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? A. By cyanobacteria B. By electrical discharges in the atmosphere C. By industrially synthesised fertilizer D. By denitrification
Answer:- Option D
Question:- Ptyalin is an enzyme produced in the A. salivary glands B. pituitary glands C. thyroid glands D. pancreas
Answer:- Option A
Question:- Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes A. tetanus B. influenza C. cholera D. typhoid
Answer:- Option C
Question:- What is anthocyanin pigment in plants?
Answer:- ABSTRACT. Anthocyanins are colored water-soluble pigments belonging to the phenolic group. The pigments are in glycosylated forms. Anthocyanins responsible for the colors, red, purple, and blue, are in fruits and vegetables. Berries, currants, grapes, and some tropical fruits have high anthocyanins content.