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...... ... nephridia are present in the ...

...... ... nephridia are present in the sth.gih segments

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Pharyngeal of tufted
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Procedure : (i) Draw three circles of any radius with centre O on chart paper. (ii) From these circles, cut a semi - circle, a minor segment and a major segment (iii) Consider three points on these segment and name them as A,B, and C (iv) Cut the triangles and paste it the graph sheet so that the point A coincides with the origin as shown in the figure. Ovservation : (i) Angle in a Semi - Circle is . . . . . . . . . . angle. (ii) Angle in a major segment is angle. (iii) Angle in minor segment is . . . . . . . angle.

FULL MARKS-ORGAN AND ORGAN SYSTEMS IN ANIMALS -ADDITIONAL QUESTIONS SOLVED (II Fill in the blanks)
  1. In earthworm, the ..............vessel has no valves and non-contracti...

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  2. In earthworms excretion is effected by .......

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  3. ...... ... nephridia are present in the sth.gih segments

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  4. Special cells on the coelomic wall of the intestine called ..............

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  5. In earthworms, the male genital aperture contains two pairs of...........

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  6. The secretion of the prostate gland serves to cement the spermatozoa i...

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  7. .............. are present in the 7th, 8th and 9ih segment of earthwor...

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  8. The process of producing compost using earthworm is called .......

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  9. The first pair of wings of cockroach is called ........

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  10. In both male and female cockroach, genital apertures are surrounded by...

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  11. In the mouth parts of cockroach helps in grinding of food.

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  12. In between the foregut and midgut of cockroach ...... ... are present

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  13. In between the midgut and the hindgut of cockroach, ................ a...

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  14. The respiratory organs of cockroach are ......

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  15. The trachea of cockroach open through 10 pairs of small holes called.....

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  16. The opening and closing of spiracles are regulated by. .. ...

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  17. The blood of cockroach is called as.......

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  18. The blood from the sinuses enters the heart of cockroach through the ....

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  19. In cockroach, there is a accessory. .... at the base of each antenna ...

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  20. The .......... receptors are located in the antenna, maxillary palps a...

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