Tag: know the plant world closely
Questions Related to know the plant world closely
Which of the following is a parasitic plant?
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Cactus
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Salvia
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Cuscuta
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Cucumber
The organisms obtain nutrients from dead and decaying organic matter from which mode?
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Parasite
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Autotroph
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Saprophytes
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Holozoic
Holozoic modes of nutrition is a method of nutrition that involves the ingestion of liquid or solid organic material, digestion, absorption and assimilation of it to utilize it. For example, amoeba.
Few plants cannot synthesise food on their own and depend upon other plants and small animals. They are called as heterotrophic plants. These heterotrophs are classified in
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Thallophytes and bryophytes
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Saprophytes and parasites
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Xerophytes and hydrophytes
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Saprophytes and pteridophytes
Parasite are the organism, which depends upon other organism for its nourishment and growth, is known as parasite. It has intracellular digestion. It causes harm to the organism.
Symbiotic relationship is called as
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Some organisms live together
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Share shelter and nutrients
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Both A and B
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None of the above
Symbiosis is any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. Both positive (beneficial) and negative (unfavourable to harmful) associations are therefore included, and the members are called symbionts. Any association between two species populations that live together is symbiotic, whether the species benefit, harm, or have no effect on one another.
Bread mould gets its food
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Through photosynthesis
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Non living matter
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By eating herbivorous animals
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All of the above
Bread mold (Rhizopus stolonifer) is a widely distributed thread-like mucoralean mold. Commonly found on bread surfaces, it takes food and nutrients from the bread and causes damage to the surface where it lives. Asexual spores are formed within pinhead-like sporangia, which break to release the spores when mature. Germination of these spores forms the haploid hyphae of a new mycelium. R. stolonifer grows rapidly at temperatures between 15 and 30°C.
.......... are good sources of oxygen for those organisms that live in water.
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Moss
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Mushroom
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Sea urchin
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Algae
Like all green plants, algae produce oxygen during the daylight hours as a by-product of photosynthesis. This is usually a major source of oxygen in fish ponds. In darkness, however, all plants consume oxygen, including algae. Algae blooms in natural water bodies or fish ponds normally produce much more oxygen in the daylight than they consume during the night, but some situations reduce the amount of oxygen a bloom produces without reducing its nighttime oxygen consumption. Trace minerals or nutrients needed by the algae are occasionally used up, causing some or even all, of the bloom to die back temporarily. The resulting bacterial decomposition and loss of normal oxygen production can lead to oxygen depletions and fish kills. Pond water generally changes from a deep green to black, gray, brown or clear after a phytoplankton die-off.
We can demarcate a facultative parasite as one which
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Inevitably requires living host.
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Only requires dead organic matter to live.
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Is actually a parasite but can also become saprophyte.
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Is actually a saprophyte but can also become a parasite.
Facultative parasites are organisms which do not completely depend on a host for completing its life cycle, but may become parasitic in absence of food or other favorable conditions
Cuscuta is
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Total root parasites
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Total stem parasites
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Partial stem parasites
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Epiphytes
Cuscuta (Doddar) plant is obligate or total stem parasite. It completely lacks chlorophyll and has no connection with the soil after the seeding stage. Therefore it is totally dependent on the host for organic food materials and supply of water and minerals salts.
______________ is a parasitic plant.
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Mushroom
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Mucor
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Cuscuta
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Yeast
Animals living and subsisting on other animals are studied under
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Pathology
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Parasitology
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Parazoology
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Protozoology
a) Pathology deals with the study of the nature and causes of diseases.