Question

Answer the following please ​

Answer 1

Explanation:

1) (a)parasitic

reason:-

Cuscuta is a parasitic plant. It has no chlorophyll and cannot make its own food by photosynthesis. Instead, it grows on other plants, using their nutrients for its growth and weakening the host plant. ... Once they are firmly attached to a host, the cuscuta root withers away.

(b)rhizobium bacteria

reason:-

The bacteria in the soil that can convert atmospheric nitrogen into a soluble compound is rhizobium bacteria. It is present in root nodules of leguminous plants is rhizobium bacteria.

(c) carbon-dioxide

reason:-

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

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2)Like all fungi, lichen fungi require carbon as a food source; this is provided by their symbiotic algae and/or cyanobacteria, that are photosynthetic. The lichen symbiosis is thought to be a mutualism, since both the fungi and the photosynthetic partners, called photobionts, benefit..

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3) Insectivorous plants grow in nitrogen deficient soil and fulfil their nitrogen requirement by trapping small insects. These are green plants and synthesize their food and use small insects only to supplement their nitrogen requirement.

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4)Saprotroph, also called saprophyte or saprobe, organism that feeds on nonliving organic matter known as detritus at a microscopic level.

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5)Starch testing:-

• heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions)
• heat it in boiling ethanol for a few minutes (this removes most of its colour)
• wash with water and spread onto a white tile.
• add iodine solution from a dropping pipette.