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NIOS Biology (314) Solved Assignments [TMA] 2023-24
NIOS SOLVED ASSIGNMENTS [TMA] 2023-24
SENIOR SECONDARY SOLVED [TMA] 2023-24 for class 12
Biology (314)
Tutor Marked Assignment
Click here to buy NIOS Biology (314) Solved TMA (2023-24)
Max. Marks: 20
Note:
(i) All questions are compulsory. The marks allotted for each question are given beside the question.
(ii) Write your name, enrollment number, AI name and subject on the first page of the answer sheet.
1. Answer any one of the following questions in about 40-60 words.
a) Why do plants not need an Oxygen carrier like the humans in whom Oxygen is carried by Hemoglobin? (See lesson-12)
Ans - Plants do not need an oxygen carrier like hemoglobin because they obtain oxygen directly from the air through tiny openings called stomata on their leaves. These openings allow for the exchange of gases, enabling plants to take in oxygen and release carbon dioxide. In contrast, animals like humans require oxygen carriers in their blood because they do not have direct access to atmospheric oxygen.
b) Why does it happen that during hot summer months although you drink lot of water or cold drinks, you do not urinate much? Explain. (See lesson-14)
Ans - Answer Anyone
2. Answer any one of the following questions in about 40-60 words.
a) Conservation and Management of water has become an urgent step to be taken up by mankind. Write any four methods of such conservation steps. (See lesson-26)
Ans - Answer Anyone
b) Which of the following fossils is a connecting link between reptiles and Birds? Briefly explain. (See Lesson-01)
i) Eohippus,
ii) Archaeopteryx
Ans - Archaeopteryx is the fossil that serves as a connecting link between reptiles and birds. It exhibits characteristics of both groups, with feathered wings like birds and reptilian features such as teeth and a long bony tail. This transitional fossil provides evidence for the evolution of birds from reptilian ancestors.
3. Answer any one of the following questions in about 40-60 words.
a) Which of the following is found in plant cells only? Mitochondria, Endoplasmic Reticulum, Cell wall and Ribosome (See Lesson-04)
b) Outline the diagram of the kidney and briefly describe where ultra filtration occurs in the kidney and which molecules pass during ultra filtration.
4. Answer any one of the following questions in about 100-150 words.
a) The teacher said frog is an ectotherm what did she mean? How does frog then survive in the extremely cold seasons? (See lesson-18)
b) Because of a blockage in the bile duct of a person, his small intestine was not getting a digestive juice in sufficient amount. His doctor advised him to avoid fatty food. Name the digestive juice in question and state how the juice helps in the digestive process. (See lesson-13)
5. Answer any one of the following questions in about 100-150 words.
a) A person has more than normal sugar in blood. He/She excretes a large amount of urine loaded with sugar. What is this due to? Explain? (See lesson-14)
b) Some plants in one corner of your kitchen garden are showing poor growth and their leaves are becoming yellow. This could be due to the deficiency of some essential element. Name the essential element whose deficiency is causing this problem and mention why the leaves are turning yellow. Also discuss how are the minerals absorbed by the plants? (See Lesson-9)
6. Prepare any one project out of the given below:
a) Visit to the zoo / sanctuary / biosphere reserve / aquarium / bird sanctuary / Biodiversity Park
Collect your friends make a group and organize a trip to one of the above mentioned places. Carry a camera or mobile to take photographs. You have already learnt how important ‘biodiversity’ is for humans. Our plants and animals are also the country’s heritage. Once you get familiar, you shall enjoy knowing more about their behaviour, adaptations and life cycles.
Take a notebook and note down names of the animals you have seen. Use the internet to know their scientific names and make an album of the pictures of animals you have become familiar with. Observe their behaviour and you may now prepare
1. A power point presentation
2. Story book describing their behavior
3. Photographic album
4. Scrapbook or
5. A report on the trip
b) Constructing a greenhouse from scrap material
You are learning a lot about the ‘greenhouse effect’ and global warming. Why not see for yourself how sun rays heat the greenhouse and keep it warm enough for plants to survive in it. You shall need some pieces of glass for transparent plastic sheets, Brown cello tape, cardboard, plastic pipes to circulate water inside the chamber, toy fan to cool the inside.
Assemble all the parts and build the green house. Keep it in the Sun on different days. Note atmospheric temperature from the newspaper and use a thermometer to check the temperature inside the greenhouse that you have created.
Check the temperature from time to time and on different days of the month and prepare a comparative statement of the changes in temperature that you observed.
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