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Which are the activities we should follo...

Which are the activities we should follow among the following? (A) Turn on light as you wish, (B) Don’t keep refrigerators open for long time, (C) Plant trees, (D) Paint walls of your home with light colour

A

A,B,C,D

B

B,C,D

C

A,C,D

D

A,B,D

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Let us do the following activity to understand the mendelian principles of heredity. Materaials required: a. 3cm length and 1 cm breadth chart pieces -4 b. 2 cm length and 1 cm breadth chart pieces -4 c. Red byuttons -4 d. white buttons -4 e. chart, scale, sketch pen penil, 2 bags. Method: Prepare a chart with 2x2 boxes along with numbe and symbol as shown in the figure. Game 1: Monohybrid cross (starting with hybrid parents) To start with take 1,2 or 3,4 . In case you start 1,2 pik all the 16 log and short pieces and prepare such paris in each of which you have a long and short piece. Take 4 pairs each of long and short strips and put them in two separate bags. Now each bag contains 8 strips (4 long and 4short). One bag say 'A' represents mael and the bag 'B' represents female . Now rendomly pick one strip each from bag A and B and put them together in the 1 on the chart. Keep picking out the strips and arrange them in the same manner till your bags are empty. Same time your boxes in the chart are filled with paris of strips. you might have got the following combinations, two long strips, one long and one short strip, two short strips. (Q) B. What is the number of one long and one short pairs?

NCERT TELUGU-OBJECTIVE TYPE QUESTION-ENVIRONMENTAL EDUCATION
  1. Grow shade trees which help to cool the house and reduce the utilizati...

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  2. In sun, the important source of energy is,

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  3. Which are the activities we should follow among the following? (A) Tur...

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  4. Average life span of fluoroscent bulb is …………….. Times greater than th...

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  5. Do you think solar energy transforms - into chemical energy by the pro...

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  6. What is pollination?

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  7. Ranganadh cultivated marigold flowers along with Chilies in his field....

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  8. Smitha converted her broken toy into a wall hanging. What is this cal...

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  9. Percolation tanks helps to

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  10. These are to be called as Animal Conservation Centers.

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  11. In 19th century the population of is 1,00,000 but now has fallen to a...

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  12. The name of the project for tigers-

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  13. What ar biodegradable substances?

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  14. Observe the following sentences. (A) Buy a polythene cover at the mark...

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  15. Consumption of cheap,less durable products leads to wastage of

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  16. Self employment schemes help in generating-

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  17. Which of the statements is false-

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  18. Which of the following is a desert in India-

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  19. This is responsible for floods and famine-

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  20. Observe the following a, b sentences (A) No harm to the environment by...

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