Fill in the blanks: (1) Dragonfly is used to control …………………..
(b) Lady bird is effective biological control against………………….
(3) …………………attack on the arthopodes & insects.
(4) The most effective microbial biopesticide is …………which is species specific.

Give the name of pathogen which attack on insect and other Arthopods so used as biological control agents.

The delta endotoxins are released, by which of the following organism that is most effectively used as biological control?

Assertion : Dragonflies can be used to decrease occurrence of diseases like malaria, dengue, etc. Reason : Baculoviruses are effective in controlling may insects and other arthropods.

(a) A colloidal sol is prepared by the given method in figure. What is the charge of AgI colloidal particles in the test tube ? How is the sol formed, represented? (b) Explain how the phenomenon of adsorption finds application in Heterogeneous catalysis. (c) Which of the following electroytes is the most effective for the coagulation of Fe(OH)_(3) sol which is a positively charged sol? NaCI, Na_(2)SO_(4), Na_(3)PO_(4)

The free-living fungus Trichoderma can be used for 1) killing insects 2) biological control of plant diseases 3) controlling butterfly caterpillars 4) producing antibiotics

Fill in the blanks (a) ______ beetle with red and black markings is useful in controlling aphids. (b) Species specific narrow spectrum insecticidal applications are shown by ______ . (c ) In paddy fields ______ serve as an important biofertilisers.

Fill in the blanks: 1. India has a greater …..a…… diversity than a Scandinavian country like Norway. 2. The western Ghats have a greater …..b….. Diversity than the eastern Ghats. 3. It has taken millipons of years of evolution to accumulate the rich diversity in nature,but we would lose all the wealth in less than .....c..... if the present rates of species lossess continue. 4. For many taxonomic groups, species inventories are more complete in .....d..... than in ....e..... countries.

Given below is a crossword puzzle. Read the clues across and clues down, and fill up the blank squares. Clues down 1. Germs or germ - substances introduced into the body to prevent occurrence of an infectious disease. 2. A disease caused by an infected dog that affects the central nervous system. 3. A disease in which the eyes, the skin and the urine turn yellow. 4. The disease pertussis is popularly known as whooping ....... Clues across 1. Category of pathogen that causes diseases like common cold and mumps. 5. This is the vaccine for preventing tuberculosis. 6. An organ usually affected by tuberculosis. 7. Jumbled spelling of one of the most common insect which visits our exposed foods and contaminates them. 8. Cover this part of your body by a handkerchief while sneezing to prevent droplet infection to others. 9. These may readily grow in your hair, if you do not wash it regularly. 10. A disease that weakens body's defence system against infections.

Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements. (A) Wings of butterfly and birds look alike and are the results of i evolution. (B) Miller showed that CH_(4), H_(2),NH_(3) and i when exposed to electric discharge in a flask resulted in formation of ii (C) Vermiform appendix is a i organ and an ii evidence of evolution. (D) According to Darwin, evolution took place due to i and ii or the fittest.