Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Guru Nanak Public School Sarabha Nagar, Ludhiana Biology Assignment - Class XI MCQ’s 1. The root hair region lies immediately above the i. root-cap region ii. region of elongation iii. region of maturation iv. meristematic region 2. Roots developed from unusual positions, stem, leaf or any other part are called i. fibrous roots ii. secondary roots iii. tertiary roots iv. adventitious roots 3. Modified adventitious roots for storing food occur in i. sweet potato ii. potato iii. radish iv. Crotalaria 4. Stilt roots are found in i. Banyan ii. Maize iii. Vanda iv. Betel 5. Mint produces i. an offset ii. a sucker iii. a stolon iv. a runner 6. Ginger is not a root because i. it is horizontally elongated ii. it stores food iii. it does not possess chlorophyll iv. it possesses nodes and internodes. 7. Potatoes are produced in i. tap roots ii. secondary roots iii. adventitious roots iv. underground branches of stem 8. Potato is modified stem because i. it is non-green ii. It stores starch iii. It bears axillary buds iv. it can propagate vegetatively 9. Respiratory roots are found in i. Vanda ii. Bryophyllum iii. Avicennia iv. Ficus 10. The edible part in onion is i. disc-like stem ii. root iii. scale leaves iv. flowers 11. A massive underground stem that grows vertically is called a corm and occurs in i. potato ii. ginger iii. zaminkand (Amorphophallus) iv. onion 12. Pneumatophores are i. positively geotrophic ii. positively hydrotrophic iii. negatively geotrophic iv. negatively hydrotrophic 13. Parallel venation is characteristic of i. all dicots ii. most monocots iii.both dicots and monocots iv. only some monocots 14. The arrangement of leaves on a stem is called i. taxonomy ii. taxis iii. Phyllotaxy iv. taxon 15. Root hairs are i. multicellular ii. unilocular iii. multilocular iv. unicellular Short answers 1. What is the function of root and stem in a plant? 2. What are nodes and internodes? 3. Name the different types of root systems. 4. Differentiate between taproot and fibrous root system 5. Name the modifications of stems. 6. What are breathing roots? 7. Differentiate between prop roots and stilt roots. 8. Give one example each for runner, stolon, offset and sucker. 9. Differentiate between a stem tuber from a root tuber. 10. Distinguish between leaf tendrils and stem tendrils. Long answer 1. Describe the various regions of the root with neat labelled diagram. 2. Explain the different modifications of the root, stem and leaves in a tabular form. 3. Describe the parts of a leaf with a sketch. 4. Differentiate simple and compound leaves with suitable examples. Discussion type questions 1. How can you prove that i) a potato is a modified stem ii) ginger is not a root. 2. Assert that sweet potato and potato are different types of modifications. 3. How can you prove that a pinnately compound leaf is different from a branch bearing simple leaves?