NIOS CLASS 12TH Biology (314) SOLVED TMA In English Medium PDF SESSION 2022 - 23
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➛ This Nios Tutor Marked Assignment (TMA) is Only valid for 2022-23 Academic Session.
➛ which is Applicable for March/April & October/November 2023 Examination.
➛ Best Answer in PDF Format of NIOS TMA.
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➛ Total six questions are given by Nios in TMA. All questions have 2 options out of which one has to be selected. In this PDF, we have given you the answer of one option which is better so that your marks will be good.
➛ You have to write the question and answer on the A4 size sheet as given in this PDF.
➛ After writing, the page has to be scanned and made a PDF and upload on the portal of NIOS.
1. Answer any one of the following questions in about 40-60 words:
(a) Explain the term differential reproduction in two steps.
(b) Give any one point of difference between the following:-
(i) Prophase of Mitosis and that of meiosis.
(ii) Mitotic Anaphase and Anaphase I of Meiosis.
2. Answer any one of the following questions in about 40-60 words.
(a) The three steps of unique formation in humans are Tubular secretion, ultra-filtration and selective absorption.
(i) Write them in the correct sequence of their occurrence.
(ii) Name the microscopic parts of the kidney where each of these steps occurs.
(b) Why does a cell remain stable when placed in isotonic solution? What happens to it if placed in a hypotonic solution?
3. Answer any one of the following questions in about 40-60 words.
(i) Two men were claiming to be the father of a child named Mohan.
(ii) Suggest to them a conclusive method to identify the real father and name the enzyme required to make copies of a piece of DNA for PCR required in the process.
(iii) A farmer is growing transgenic cotton. How is it different from the ordinary cotton?
(i) You ate a meal comprising pulses (dal) and chapatis (roti). In which parts of the digestive system would their digestion begin, and be completed?
(ii) Also name the end products.
4. Answer any one out of the following questions in about 100-150 words.
(i) Describe the role of thin, and thick muscle fibres in the contraction of a striated muscle as explained by the sliding filament theory.
(ii) (ii) All tissues of plants require Nitrogen?
(i) In which ionic form is it taken up by plants, and from where in the environment.
(ii) Mention any five organic biomolecules, which they synthesize using the nitrogen.
5. Answer any one out of the following questions in about 100 to 150 words.
(i) The temperature in Delhi falls to even 5°C in winter and may go up to 45°C during summer but our body temperature remains at 37°C. How do we make it possible?
(ii) Define the concept of homeostasis using the above example in a sentence or two.
(i) Draw a sigmoid growth curve of a plant to show lag phase, log phase and stationary phase. Mention what happens to a plant during these phases.
(ii) Some wheat and rice varieties are kept at a lower temperature to flower in the same climate. Define this process.
6. Prepare any one of the project out of two given below.
Collect ten plants of your choice, uproot them carefully, so that their roots are not
damaged, and press them between fullscape papers, and leave under a pile of books.
Now find out from elders, teachers, gardeners the common, and scientific names of the
plants, and record their description as follows:
1. Common name (Local / Hindi)
2. Scientific name
13. Utility/value - medicinal / cosmetic / ornament
14. Season when growing
15. Collection site
16. Month when collected
17. Any other notable characteristic feature.
You may use your book or botany book or internet to describe types of the above mentioned parts.
Take photographs (or draw Portrait or write name) of one of your parents or siblings and yourself. Stick them close to each other. Now below each photograph enter the following:
Write down the following
i. What is genetics? Write the meaning of inheritance
ii. Draw a Pedigree Chart to show inheritance of any of the characters studied in you and your siblings.
iii. Comment on whether you got the gene from the father or mother, and write a sentence as an evidence for the same.
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Most Important Facts relating to TMA:
➛ This assignment solution is based on the latest session 2022-23.
➛ The Last date of submission of this assignment is 31 January 2023 (For April examination).
➛ The Last date of submission of this assignment is 31 August 2023 (For Oct. examination).
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