Kingdom Monera

Q.

Chlamydomonas and chlorella were considered as plants why?

Q.

What is the difference between eukaryotic and prokaryotic DNA?

Q. The most abundant prokaryotes helpful to humans in making curd from milk and in the production of antibiotics are the ones categorized as:

1. Chemosynthetic autotrophs
2. Heterotrophic bacteria
3. Cyanobacteria
4. Archaebacteria

Q. In Whittaker's five kingdom system of classification, eukaryotes are distributed among

1. two kingdoms
2. three kingdoms
3. four kingdoms
4. all the five kingdoms

Q.

Do Prokaryotic cells have lysosomes?

Q. Consider the following statements with respect to characteristic features of the kingdom

(a) In Animalia, the mode of nutrition is autotrophic.

(b) In Monera, the nuclear membrane is present.

(c) In Protista, the cell type is prokaryotic.

(d) In Plantae, the cell wall is present.

Of the above statements:

1. (c) alone is correct
2. (a), (b) and (c) are correct
3. (a) alone is correct
4. (d) alone is correct
5. (b) alone is correct

Q.

Bacterial cells mainly reproduce by______.

Q. Assertion :Archaebacteria are able to survive in harsh habitats. Reason: Presence of peptidoglycan in cell wall help archaebacteria to survive in extreme conditions.

1. If both assertion and reason are true and reason is the correct explanation of assertion.
2. If both assertion and reason are true but reason is not the correct explanation of assertion.
3. If assertion is true but reason is false.
4. If both assertion and reason are false.

Q. In the five kingdom system of classification, which single kingdom out of the following can include blue-green algae, nitrogen fixing bacteria and methanogenic archae bacteria?

1. plantae
2. monera
3. protista
4. fungi

Q. An organism with non-cellulosic cell wall and autotrophic nutrition would belong to

1. Animalia
2. Fungi
3. Protista
4. Monera

Q. Algae have great economic importance to man because

1. They help to restore the fertility of the soil.
2. Both B and C.
3. They can be grown in tanks.
4. Of their high protein content, some algae may be used as future food.

Q. Mycoplasma lacks a and is a

1. aerobe
2. cell membrane
3. cell wall
4. facultative anaerobe

Q. Anoxygenic photosynthesis is a characteristic feature of

1. Spirogyra
2. Chlamydomonas
3. Ulva
4. Rhodospirillum

Q.

Do Prokaryotes have a nuclear envelope?

Q.

Plasmid is a:

1. Part of plasma membrane

2. Extra chromosomal DNA in bacterial cell

3. Plastid

4. Fungus

Q.

The maximum type of nutritional diversity is found in

1. Monera

2. Protista

3. Mycota

4. Plantae

Q. Which among the following statements are correct?
A. Compared to many other organisms, bacteria as a group show the most extensive metabolic diversity
B. Mycoplasma die in the absence of oxygen
C. Cyanobacteria often form blooms in polluted water bodies
D. No pathogenic mycoplasmas have been found so far

1. A, B and C
2. A and C
3. B, C and D
4. C and D

Q. All prokaryotes have a very primitive nucleus in which the genetic material is

1. histones with linear double-stranded DNA
2. linear single-stranded DNA without histones
3. double-stranded, free, circular DNA with histones
4. double-stranded DNA without histones

Q. Which among the following statements is true for Mycoplasma?

1. Presence of cell wall
2. Presence of nucleus
3. Definite shape
4. Survive without oxygen

Q. Habitats of archae bacteria
Meanings for these words pls
1.extremophiles
2.thermophiles
3.psychrophiles
4.methanogens

Q. Which of the following statement is incorrect with respect to operons?

1. Operon is a coordinated group of genes that function together
2. All genes of an operon are present downstream of a single promoter
3. Operons are characteristic of eukaryotes and are absent in prokaryotes.
4. Operons may either be inducible or repressible in nature.

Q. In which kingdom, would you classify the archaea and nitrogen-fixing organisms, if the five kingdom system of classification is used

1. Protista
2. Monera
3. Plantae
4. Fungi

Q. 130.) Restriction modifications systems ofbacteria exists to1) protect bacteria from invading for-eign DNA2) promote conjugation3) help the bacterial chromosome toreplicate4) encourage recombination fo newgenetic material

Q. Nitrifying bacteria are examples of .

1. photoautotrophs
2. photoheterotrophs
3. chemoautotrophs
4. chemoheterotrophs

Q. Among the following, which is/are photosynthetic autotrophs$?$

Q. Anoxygenic photosynthesis is a characteristic feature of

1. Spirogyra
2. Ulva
3. Chlamydomonas
4. Rhodospirillum

Q. All of the following are found in prokaryotic mRNA except

1. AUG
2. UGA codon
3. introns
4. uracil

Q.

Is there a nucleus in Nostoc?

Q. Photoautotrophic organisms perform photosynthesis without the release of molecular oxygen.

1. always
2. can
3. never
4. cannot

Q. What are plasmids?