Useful actions of algae - class-VIII
Description: useful actions of algae | |
Number of Questions: 18 | |
Created by: Muni Gupte | |
Tags: biology plant kingdom kingdom plantae pictorial feature of plant kingdom micro - organism |
.......... is a source of additional fuel through carbohydrates.
Match column I with column II and select the correct option from the codes given below.
Column I | Column II |
---|---|
A. Food | (i)Brown algae |
B. Agar | (ii)Porphyra, Laminaria |
C. Algin | (iii) Geiidium, Graciiaria |
D. Carrageenin | (iv)Red algae |
Algae have great economic importance to man because
Agar is obtained from which of the following alga?
An alga, very rich in protein, is
Which type of algae are helpful in nitrogen economy?
Algae are important to study because
People recovering from long illness are often advised to include the algae Spirulina in their diet because it
Algae are useful because they
Which of the following blue-green algae helps in the formation of biofertilizers?
Alga that is useful for prolonged space flight for liberation of oxygen, consumption of $C{O} _{2}$, disposal of wastes and formation of food is
Which of the following statement supports the fact that studying about algae is important?
Which of the following is used to make china clay?
A natural antibiotic is provided by :
Druse is
A thalloid red algae used for commercial production of agar-agar is
The element present in thyroxin is obtained from
Algae producing tocopherol is