Question

Hey...!!!!! Brainlians
Answer these questions :-
Question 1 ) Explain how Cromatin material & Chromosomes are related to each other ( more than 80 words)
Question 2 ) write down and compare common features of amphibians and reptiles( more than 150 words)
Question 3 ) why do we keep both snake and turtle in same class ??? ( more than 80 words)

Note :-
All questions are compulsory
Asked by SabreQueenNo.1
#Aatmagyani
Best of luck​

Answer 1

Answer : 1

Inside the nucleoplasm a tangled mass of thread-like structures is called chromatin. ... When a cell starts to divide, the tangled mass of chromatin condense into long threads and finally rod-like bodies called chromosomes. The chromosomes contain stretches of DNA which carry information for protein synthesis.

Answer : 2

Amphibians are frogs, toads, newts and salamanders. Most amphibians have complex life cycles with time on land and in the water. Their skin must stay moist to absorb oxygen and therefore lacks scales. Reptiles are turtles, snakes, lizards, alligators and crocodiles.

Amphibians Reptiles

Skin is smooth and highly porous. Skin is dry, hard and scaly.

Yes, the world's amphibians and reptiles are facing an unprecedented assault and are experiencing tens of thousands of years' worth of extinctions in just a century. Scientists have observed these disturbing trends in the United States too, where approximately 20 percent of amphibian species and 10 percent of reptile species are at risk of dying out. While habitat loss is the most obvious cause of endangerment, declines are even even occurring in pristine areas from threats such as disease, UV radiation and climate change. Amphibians and reptiles are also suffering from overcollection and unregulated hunting.

Answer : 3

Snake and turtle belong to same class-Fteptilia. They are kept in same class because both (i) are cold-blooded. (ii) have scales as outer covering. (iii) have lungs for breathing. (iv) have three-chambered heart. (v) lay eggs with tough outer covering. (vi) Fertilization is internal.

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Answer 2

°Answer 1 ...

Inside the nucleoplasm a tangled mass of thread-like structures is called chromatin. ... When a cell starts to divide, the tangled mass of chromatin condense into long threads and finally rod-like bodies called chromosomes. The chromosomes contain stretches of DNA which carry information for protein synthesis.

°Answer 2 ...

Similarities between Reptiles and Amphibians

Reptiles include turtle, lizard, crocodiles, snakes while amphibians include frogs, salamander, toads, newts. They both are Ectothermic i.e cold-blooded. They need external heat sources to maintain body temperature.

°Answer 3 ...

Snake and turtle belong to same class-Fteptilia. They are kept in same class because both (i) are cold-blooded. (ii) have scales as outer covering.

@Samu ❤️