first unit test.docx

**L.B.Aney Jr.College, Yavatmal** **Class XI** **Assignment 2024-25** **Subject : Biology** **Q.No 1 Choose the correct option 05 M** i. Mitochondrial DNA is \...\...\...\...\...\...\.... a\. naked b. circular c.double stranded d. all of these ii. Cell wall is present in\...\..... a...

**L.B.Aney Jr.College, Yavatmal** **Class XI** **Assignment 2024-25** **Subject : Biology** **Q.No 1 Choose the correct option 05 M** i. Mitochondrial DNA is \...\...\...\...\...\...\.... a\. naked b. circular c.double stranded d. all of these ii. Cell wall is present in\...\..... a\. plant cell b. prokaryotic cell c. algal cell d. all of the above iii. Plasma membrane is fluidy structure \...\...\...\... a\. carbohydrates b. lipids c. glycoprotein d.polysaccharide iv. Histone proteins are synthesis during \...\...\...\...\.... a\. G~1~-phase b. S-phase c.G~2~-phase d. interphase v. Synapsis is pairing of \...\...\.... a\. any two chromosomes b. non homologous chromosomes c\. sister chromatids d. homologous chromosomes **Q.No.2 Answer the following questions 05 M** i. Is nucleolus covered by membrane ii. Fluid mosaic model proposed by Singer & Nicholson replace Sandwich Model proposed by Danielli & Davson. Why? iii. What is Chiasmata? iv. What is cell cycle v. Which process occur during interphase **Q.No.3 Answer the following questions 06 M** i. Match the following Column A Column B --------------- ------------------- a\) Leptotene i\) Crossing over b\) Zygotene ii\) Desynapsis c\) Pachytene iii\) Synapsis d\) Diplotene iv)Bouquet ii. Draw a labelled diagram of the Metaphase (Plant cell) iii. Distinguish between smooth endoplasmic reticulum & rough endoplasmic reticulum **Q.No.4 Answer the following questions 09 M** i. Label the A,B,C & D in diagram & write the function of organelles A & B Label the A, B, C, and D in the above diagram and write the functions of organells A and B. - Biology \| Shaalaa.com ii. Distinguish between mitosis & meiosis iii. Identify the cell structure from its description below -- a\) manufactures ribosomes b\) carrys out photosynthesis c\) manufactures ATP in plant & animal cell