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170. Common foature of frog and cockroach is (1) Closed circulatory system (2) Uricotelism 2) Dorsal nerve cord (4) Indirect development 121 contraction all of the follow

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Q1
Short Answer.
Differentiate between :
(a) Open and closed circulatory system
(b) Oviparity and viviparity
(c) Direct and indirect development
(d) Acoelomate and pseudocoelomate
(e) Notochord and nerve cord
(f) Polyp and medusa
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Q2
Differentiate between:

a. Open circulatory system and closed circulatory system

b. Oviparous and viviparous characteristic

c. Direct development and Indirect development
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Q3
How many of the following are charactenstics of arthopods?
1. protostome development
2. bilateral symmetry
3. a pseudocoelom
4. three embryonic germ layers
5. a closed circulatory system
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Q4
What is indirect development and direct development if indirect development includes larve formation then why there is direct development in cockroach and indirect development in frog?
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Q5
What is common between cockroaches and earthworm? A) closed circulation B) nephridia C) solid ventral nerve cord D) malpighian tubules
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