Unicellular & Multi Cellular Organisms

Q.

Why there is no division of labour in unicellular organisms? Give reason.

Q.

All organisms start life as a single cell called the ___ .

Q.

Why do plants have dead cells whereas as animals have living cells?

Q.

Which of the following is/are single-celled organisms?

1. Cell membrane

2. Cell wall

3. Nucleus

4. Mitochondria

Q.

Amoeba acquires its food through a process, termed

1. exocytosis

2. endocytosis

3. plasmolysis

4. None of these

Q. Which of the following statement(s) is/are correct w.r.t. muscular tissue?

(a) The wall of the internal organs such as stomach and intestine contain non-striated muscle fibres.

(b) Striated muscles are rich in blood supply as compared to non-striated muscles.

(c) In a typical muscle such as biceps, voluntary muscle fibres are bundled together in a non-parallel fashion.

Choose the correct option.

पेशी ऊतक के संदर्भ में निम्नलिखित में से कौनसा/कौनसे कथन सही है/हैं?

(a) आमाशय और आँत जैसे आंतरिक अंगों की भित्ति में अरेखित पेशी तंतु होते हैं।

(b) अरेखित पेशियों की तुलना में रेखित पेशियों में प्रचुर मात्रा में रक्त आपूर्ति होती हैं।

(c) प्रारूप पेशी जैसे द्विशिरस्क में ऐच्छिक पेशी तंतु असमानांतर रूप से एक साथ जुड़े रहते हैं।

सही विकल्प का चयन कीजिए।

1. Only (b)
   
   केवल (b)
2. (b) and (c)
   
   (b) और (c)
3. (a) and (c)
   
   (a) और (c)
4. (a) and (b)
   
   (a) और (b)

Q. Which of these are found as both unicellular and multicellular organisms?
(a) bacteria
(b) viruses
(c) algae
(d) protozoa

Q.

Which of the following are unicellular organisms?

1. Bacteria and Yeast

2. Bacteria and Lion

3. Hydra and Earthworm

4. Fish and Frog

Q.

Find the correct statement with respect to development of human life

1. Every human begins his life from several defined groups of cells

2. Every human being develops from a single cell

3. There is no definite number of cells from which a human being arises

4. Every human being arises from 2 cells

Q.

Identify the feature shared by fungal cells, plant cells and certain bacteria

1. Cell organelles

2. Prokaryotic nature of the cell

3. Cell wall

4. Nucleus

Q. Cells cannot grow and divide.

1. True
2. False

Q. Cells are formed from pre-existing cells.

1. True
2. False

Q. Identify the multicellular organisms.

1. Humans
2. Plants
3. Cats
4. Algae
5. Mushrooms
6. Bacteria
7. Euglena
8. Cyanobacteria

Q.

Which of the following are unicellular organisms?

1. Bacteria and Yeast

2. Hydra and Earthworm

3. Bacteria and Lion

4. Fish and Frog

Q.

_____________ is a colourless plastid.

1. Chromoplast

2. Leucoplast

3. Chlorophyll

4. Chloroplast

Q. State whether the given statement is True or False:
In multicellular organisms, the fertilised egg cell multiplies and the number of cells increases as development proceeds.

1. True
2. False

Q. Identify the multicellular organisms.

1. Humans
2. Plants
3. Cats
4. Algae
5. Mushrooms
6. Bacteria
7. Euglena
8. Cyanobacteria

Q.

Which of the following are unicellular organisms?

1. Amoeba

2. Yeast

3. Protozoa

4. Bacteria

Q. Amoeba takes its food by the process of:

1. Endocytosis
2. Plasmolysis
3. Exocytosis
4. Egestion

Q.

The projections of varying shapes extending out of amoeba's body are known as:

1. Outburst

2. Pseudopodia

3. Outgrowth

4. Mastoid