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Bikram Sahoo
Query: 18 / Answer: 29

06th Dec 2019 . 1

Identify the picture and mention the vegetative part that helps it to propagate.
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Dipika Sharma
Query: 3 / Answer: 0

18th Nov 2019 . 1

(a) Colonisation of a rocky terrain is a natural process. Mention the group of organisms which invade this area first. Give an example. (b) Over the years, it has been observed that some of the lakes are disappearing due to urbanisation. In absence of human interference, depict by making a flow chart, how do the successional seres progress from hydric to mesic condition. (c) Identify the climax community of hydrarch and xerarch succession  
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Godavari Sindhe
Query: 1 / Answer: 2

18th Nov 2019 . 1

Citing lake as an example of a simple aquatic ecosystem, interpret how various functions of this ecosystem are carried out. Make a food chain that is functional in this ecosystem.
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Chhaya Patil
Query: 3 / Answer: 0

18th Nov 2019 . 1

Which methodology is used while sequencing the total DNA from a cell? Explain it in detail.
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Monalisa Sahoo
Query: 3 / Answer: 2

18th Nov 2019 . 1

Explain the process of protein synthesis from processed m-RNA.
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Saswati Naik
Query: 3 / Answer: 1

18th Nov 2019 . 1

Given below is the diagram of a human ovum surrounded by a few sperms. Observe the diagram and answer the following questions :  (a) Compare the fate of sperms shown in the diagram. (b) What is the role of zona pellucida in this process? (c) Analyse the changes occurring in the ovum during the process. (d) How is the entry of sperm into the ovum facilitated? (e) Specify the region of female reproductive system where the event represented in the diagram takes place.   
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Ankita Baiju
Query: 2 / Answer: 2

18th Nov 2019 . 1

Given below is the diagram of a human ovum surrounded by a few sperms. Observe the diagram and answer the following questions : The graph given below shows the variation in the levels of ovarian hormones during various phases of menstrual cycle : (a) Identify ‘A’ and ‘B’. (b) Specify the source of the hormone marked in the diagram. (c) Reason out why A peaks before B. (d) Compare the role of A and B. (e) Under which condition will the level of B continue to remain high on the 28th day?  
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Kumari Akansha sharma
Query: 2 / Answer: 1

18th Nov 2019 . 1

A son persuades his father to replace his old mobile phone with the latest model launched in the market. He also shares the latest features it has and explains how it can be of a help to him in the modern technological world. Father is reluctant in buying a new one and tries to explain about its environmental impact. How do you think, the biologist father has tried to convince his son? Justify the arguments of father and son both, by mentioning positive aspects of the behaviour displayed by both of them in the situation concerned (three each)
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Prem Raj Thakur
Query: 3 / Answer: 1

18th Nov 2019 . 1

The graph given below shows the distribution of biomes : (a) What do the ‘X’ and ‘Y’ axes represent? (b) Identify the ‘grassland’ and ‘coniferous forest’ biomes, from the above figure. (c) Why is ‘F’ located at the given position in the graph?  
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Kumar Soren
Query: 2 / Answer: 2

18th Nov 2019 . 1

(a) In pBR322, foreign DNA has to be introduced in tetR region. From the restriction enzymes given below, which one should be used and why : PvuI, EcoRI, BamHI   (b) Give reasons, why the other two enzymes cannot be used.  
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