Mycorrhizae

Q.

Pinus seeds cannot germinate and establish without fungal association. This is because:

1. Its embryo is immature

2. It has an obligate association with mycorrhizae

3. It has a very hard seed coat

4. Its seeds contain inhibitors that promote germination

Q.

The body of the fungus is known as_______.

1. Hyphae

2. Thallus

3. Mycelium

4. Filament

Q.

The two microorganisms which live in symbiotic association in lichens are

1. Fungus and Protozoa

2. Alga and Bacteria

3. Bacteria and Protozoa

4. Alga and Fungus

Q.

Question 5

An association between roots of higher plants and fungi is called

(a) lichen (b) fern (c) mycorrhiza (d) BGA

Q.

Define mycelium.

Q.

What is the vegetative phase in fungal structure also called?

Q.

What is the body of a fungus called?

Q.

Why are fungi not included in the kingdom plantae?

Q. Mycorrhiza does not help the host plant in

1. enhancing its phosphorus uptake capacity
2. increasing its tolerance to drought
3. enhancing its resistance to root pathogens
4. increasing its resistance to insects

Q.

VAM stands for:

1. Vesicular Arbuscular Mycorrhizae

2. Vesicle Arbuscular Mycorrhizae

3. Vermicular Arbuscular Mycorrhizae

4. Vacuolar Arbuscular Mycorrhizae

Q. A symbiotic association between roots of higher plants and fungi is called

1. ferns
2. lichens
3. mycorrhiza
4. blue green algae

Q. VAM is important for

1. Breaking of dormancy
2. Retarding flowering
3. Water uptake
4. Phosphate nutrition
5. Decrease in yield

Q. Select the wrong statement among the following:

1. A mature mustard plant absorbs water equal to its own weight in about 5 hours
2. Water is often a limiting factor for plant growth and productivity
3. The flow of water upward through xylem in plants can be at high rate like up to 15 metres per Hour
4. Dry seeds are devoid of any water

Q.

Vesicular Arbuscular Mycorrhiza(VAM) is important for:

1. breaking of dormancy

2. phosphate nutrition

3. water uptake

4. retarding flowering

Q.

Why is a mycorrhizal association necessary for pinus seed germination?

Q. VAM is characterized by

1. Both A and B
2. Intracellular arbuscules
3. Intracellular vesicles
4. Associative symbiosis

Q.

Are basidiomycetes coenocytic?

Q.

Which one of the following microbes forms symbiotic association with plants and helps in their nutrition?

1. Aspergillus

2. Glomus

3. Trichoderma

4. Azotobacter

Q. VAM is component of _________

1. Ectomycorhiza
2. Green manure
3. Endomycorhiza
4. Mycoherbicides

Q.

Is moss a lichen?

Q. Vesicular arbuscular mycorrhizae (VAM) are important in

1. Phosphate uptake
2. Both A and B
3. Nitrate uptake
4. Sulphate uptake

Q. What are mycorrhizae?

Q.

In which plant will you look for mycorrhiza and corolloid roots? Also explain what these terms mean.

Q. Write the binomial nomenclature of two fungi and mention the products/bioactive molecules they help to produce. [2]

Q. The symbiotic association between fungi and roots of higher plants is referred to as:

1. lichen
2. biofertiliser
3. mycorrhiza
4. biocontrol agent

Q. Which one is an example of mutualism?

1. a and b
2. b and d
3. a and c
4. a, b and c

Q. What is mycorrhiza? How does it help as biofertilizers?

Q. With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).

Q. VAM is a

1. Mycorrhiza
2. Succulent
3. Epiphyte
4. Mesophyte

Q. 'Mycorrhizae' are useful for the plants mainly due to

1. Killing insects and pathogens
2. Providing resistance against abiotic stresses
3. Enhanced absorption of nutrients from soil
4. Fixing atmospheric nitrogen