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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Viviparity is considered to be more evolved because ______.

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प्रश्न

Viviparity is considered to be more evolved because ______.

विकल्प

  • the young ones are left on their own

  • the young ones are protected by a thick shell

  • the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival

  • the embryo takes a long time to develop

MCQ
रिक्त स्थान भरें
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उत्तर

Viviparity is considered to be more evolved because the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Evolution - MULTIPLE CHOICE QUESTIONS [पृष्ठ ४६]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 7 Evolution
MULTIPLE CHOICE QUESTIONS | Q 10. | पृष्ठ ४६

संबंधित प्रश्न

Find out through internet and popular science articles whether animals other than man have self-consciousness.


Using various resources such as your school library or the internet and discussions with your teacher, trace the evolutionary stages of any one animal say horse.


Which of the following is an example of link species? 


What is the most important pre-condition for adaptive radiation?


When we talk of functional macromolecules (e.g. proteins as enzymes, hormones, receptors, antibodies etc), towards what are they evolving?


Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon.


Practise drawing various animals and plants.


Match List I with List II.

List I List II
A. Mesozoic Era I. Lower invertebrates
B. Proterozoic Era II. Fish & Amphibia
C. Cenozoic Era III. Birds & Reptiles
D. Paleozoic Era IV. Mammals

Choose the correct answer from the options given below:


When did the first cellular forms of life appear on Earth?


Approximately how long ago did invertebrates exist in aquatic environments?


Which of the following is an adaptation that allowed amphibians to survive in both aquatic and terrestrial conditions?


What major survival advantage did thick-shelled eggs provide to reptiles?


For approximately how many years did reptiles dominate the Earth?


Which of the following is an example of a reptile that returned to the water about 200 mya?


When did dinosaurs disappear from the Earth?


Which of the following best describes early mammals?


What happened to South American mammals over evolutionary time?


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