Biology test for eleventh grade

1. It is seen that the greatest microbial activity is confined to the surface of the root called rhizoplane. The soil nearer the root exudates is called. (1) Rhizosphere (2) Phyllosphere (3) Edaphic factor (4) None of these 2. Mycorhizae are useful for (1) Fixing nitrogen. (2) Killing pathogens and insects (3) Providing resistance against stresses. (4) Enhanced absorption of mineral nutrients and water. 3. Which statement is false about lichens? (1) They are pollution indicators. (2) They grow at a very fast rate of 2cm. per year. (3) Some of them cause forest fire. (4) Some of them are used as food by reindeer. 4. Some lichens not only consist of one mycobiont and one phycobiont but one mycobiont associated with two different algal partners, one belonging to chlorophyceae and other to cyanophyceae. The latter are not distributed within the thallus but lie in special, delimited swollen parts called. (1) Soredia (2) Cephalodia (3) Cyphellae (4) Isidia 5. Majority of lichens are made of (1) Brown algae and higher plants (2) Red algae and ascomycetes. (3) Blue-green algae and ascomycetes (4) Blue-green algae and basidiomycetes 6. Quarantine regulations are concerned with (1) Growing of fruit trees in every state (2) Promotion of dry farming in sandy soil. (3) Prevention of entry of diseased plants into the country (4) Spraying of insecticides on diseased plants. 7. The origin and course of development of disease is called. (1) Inoculum (2) Pathogenesis (3) Infection (4) None of these 8. Which one of the following is mismatched? (1) Bihar famine (1956) rust of wheat (2) Bengal famine (1942-43) – Helminthosporium (3) Wine crisis in France – Plasmopara (4) Irish famine of 19th century – early blight of potato 9. The leaf spot or the tikka disease of groundnut (Arachis hypogea) is caused by which member of fungi imperfectii? (1) Fusarium (3) Cerospora (3) Altermaria (4) Helminthosporium 10. In the diagrams which one is pycnidium? 11. Diseases caused by Ustilago are called smuts because (1) They develop sooty masses of spores. (2) Mycelium is black. (3) The affected parts become completely black. (4) They parasitise cereals. 12. Which of the following is teleutospore of Puccinia? 13. In Puccinia, when the host plant is mature, the same mycelium which previously gave rise to uredospores produces. (1) Aecidiospores (2) Teleutospores (3) Basidiospores (4) Ascospores 14. The species of the fungus Amanita are deadly poisonous. They contain a substance called. (1) Phallin (2) Suberin (3) Aflatoxin (4) Ochrotoxin 15. In the diagram, which is hymenium? (1) a (2) b (3) c (4) d 16. Basidiomycetes (also called club fungi) members show dolipore septa in the mycelium. Which of the following relates to dolipore septa? (1) The mycelium is coenocytic in the beginning but becomes septate when old. (2) The septum is complete and platelike (3) A central pore is surrounded by an annular septal swelling and covered on both sides of the septum by dome-shaped caps. (4) Septal are incomplete and have large openings. 17. During rains, leather becomes green due to the growth of (1) Mucor (2) Rhizopus (3) Agaricus (4) Penicillium 18. The posioning of the host resulting from ingestion of toxic substances of fungal origin is called (1) Mycotoxicoses (2) Pollinoses (3) Both (1) and (2) (4) None of these 19. Conidia of Albugo are arranged (1) Intercalary (2) Acropetally (3) Irregularly (4) Basipetally 20. The devastating famine in Ireland in 1854 was caused by a fungus, which caused the disease late blight of potato. Which of the following was the causal organism? (1) Altermaria solani (2) Albugo candida (3) Phytophthora infestans (4) Fusarium moniliforme 21. Which of the following is incorrect about Zygomycetes? (1) Sexual reproduction takes place by gametangial copulation (2) Zygote formed after sexual reproduction is called zygospore (3) Production of zygospore is characteristic feature of zygomycetes. (4) Germ sproangium produces motile gametes. 22. Fungi which can grow at and below freezing point are called. (1) Thermophilic (2) Psychrophilic (3) Keratinophilic (4) Corophilous 23. The parasitic fungi whose hyphae produce a large number of small loops and have ingenious mechanisms for capturing small animals are called (1) Symbiotic fungi (2) Coenocytic fungi (3) Predaceous fungi (4) Aquatic fungi 24. Keratinophylic fungi utilise keratin as a source of protein, which is found in skin, hair, fingernails and feathers. These fungi are called. (1) Epiphytes (2) Saprophytes (3) Dermatophytes (4) None of these 25. Mycelium of many fungi organise into a loosely or compactly woven tissue called plectenchyma. When the hyphae are compactly arranged and resemble the parenchyma of higher plant, it is called (1) Parechyma (2) Pseudoparenchyma (3) Collenchyma (4) Prosenchyma 26. In most fungi, cells wall is composed of chitin. In which of the following is chitin present only in traces and cell wall is chiefly composed of manan and glucan? (1) Rhizopus (2) Ustilago (3) Penicillium (4) Saccharomyces 27. Pigments common to all algae are (1) Chlorophyll a and phycobilins (2) Chlorophyll b and carotenoids (3) Chlorophyll a and carotenoids (4) Chlorophyll a and chlorophyll b 28. A plant body in the form of a hollow tube and multinucleate thallus, is characteristic of the genus. (1) Ulothrix (2) Polysiphonia (3) Vaucheria (4) Laminaria 29. Find the wrong match (1) Foliaceous form: Ulva (2) Heterotrichous: Stigeoclonium (3) Space alga: chlorella (4) Water net alga: Zygnema 30. Star shaped chloroplasts are found in (1) Oedogonium (2) Sporogyra (3) Zygnema (4) Ulothrix 31. Most of the phaeophyceae members are (1) Lithophytes (2) Halophytes (3) Chresophytes (4) Sciophytes 32. Which is not a pigment of brown algae? (1) Chlorophyll-c (2) Chlorophyll-d (3) Fucoxanthin (4) (-carotene 33. Find the correct statement (1) Only motile spores occurs in brown algae. (2) No motile stage is found in red algae. (3) A red algae member is also called gulf weed. (4) Batrachospermum is a green algae. 34. Cellulosic cell wall is found in the members of (1) Oomycetes (2) Ascomyceteys (3) Basidiomycetes (4) Deuteromycetes 35. The species of Spirogyra which occur in flowing waters are attached by means of a rhizoidal cell. (1) Hapteron (2) Rhizene (3) Rhizophore (4) None of these 36. Pyrenoids are characteristically found in algae. A pyrenoid body consists of (1) Core of nucleic acid surrounded protein sheath. (2) Proteinaceous core surrounded by starchy sheath. (3) Core of protein surrounded by fatty sheath. (4) Core of starch surrounded by sheath of protein. 37. The primary and secondary host of the macrocyclic heteroecious fungus causing annual recurrence of rust in India are respectively. (1) Barberry and Wheat (2) Wheat and Barberry (3) Wheat and Rye (4) Wheat and Euphorbia 38. Cephaleuros parasitica parasities which of the following crops. (1) Tea (2) Coffea (3) Saffron (4) Banana 39. Harveyella, a colourless red alga, remains associated with other photosynthetic red algae. It shows which of the following modes of nutrition? (1) Saprophytic (2) Autotrophic (3) Parasitic (4) Symbiotic 40. Sea lettuce is commonly used as salad is Southeast Asian countries. It is in fact a marine alga called (1) Chondrus crispus (2) Porphyra tenera (3) Caulerpa taxifolia (4) Ulva lactuca 41. Agarophytes are agar-yielding plants. Agar-agar s produced from which of the following algae? (1) Volvox and vaucheria (2) Gracilaria and Gelidium (3) Anabaena and Nostoc (4) Harveyella and Porphyra 42. A brown algae that covers thousands of heactares of sea in the Atlantic Ocean is (1) Dictyota (2) Fucus (3) Porphyra (4) Sargassum 43. Red colour of red algae is due to presence of phycobilins (phycoerythrin and phycocyanin), red alga devoid of red colour is (1) Gelidum (2) Porphyra (3) Batrachospermum (4) Chorndrus 44. Which of the following algae lives in a symbiotic relationship with Hydra – a coelonterate? (1) Chara (2) Chlamydomonas (3) Zoochlorella (4) Chlorella 45. Which alga is used in control of ‘Malaria’? (1) Cladophora (2) Nitella (3) Chlorella (4) None of the above Instructions: In the following questions a statement of assertion (A) is followed by a statement of Reason (R). (A) If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark 1. (B) If both assertion and Reason are true but the reason is not the correct explanation of the assertion, then mark 2. (C) If Assertion is True statement but Reason is false, then mark 3. (D) If both Assertion and Reason are false, then mark 4. 46. A: Parenthosome is derived from Endoplasmic reticulum. R: Dolipore septum is characteristic of Basidiomycetes. 47. A: Karyochorosis is a feature of fungi. R: Nuclear membrane does not break during fungal division. 48. A: Heterothallism was observed by Blakeslee. R: Phizopus sexualis shows heterothallism. 49. A: Phycomycetes are zoosporic fungi. R: Zoospores are non-motile in Saprolegnia. 50. A: C.nivalis shows red snow. R: Red snow is due to haematochrome present in hypnospores. Punjab PMT Test Series ANSWER SHEET (Fungi, Algae ) Q. No. Ans. Q. No. Ans. Q. No. Ans. Q. No. Ans. Q. No. Ans. 1 1 11 1 21 4 31 2 41 2 2 4 12 2 22 2 32 2 42 4 3 2 13 2 23 3 33 2 43 3 4 2 14 1 24 3 34 1 44 3 5 3 15 2 25 2 35 1 45 2 6 3 16 3 26 4 36 2 46 2 7 2 17 4 27 3 37 2 47 1 8 4 18 1 28 3 38 1 48 3 9 2 19 4 29 4 39 3 49 3 10 1 20 3 30 3 40 4 50 1 AIM Study Circle BOTANY (Mrs. Ritu Garg 9872986487) Punjab PMT Test Series Topic: Fungi, Algae (4) (3) (2) (1) (3) (4) (2) (1) (d) (c) (b) (a)