Diversity of Life: Test 2
Comprehensive test covering the diversity of life across bacteria, protists, fungi, plants, and animals, including taxonomy, classification, and evolutionary trends
Questions
Bryophytes resemble algae in most aspects, except the
- presence of thalloid plant body
- presence of vegetative reproduction
- dependence on water for fertilisation
- presence of jacketed and multicellular sex organs
Which of the following statements about protistan algae are incorrect?
A. They are heterotrophic and one of the major components of phytoplanktons.
B. They are only neustonic in nature.
C. The cell is surrounded by a cell wall and possesses gelatinous matrix around the cell wall.
D. Distinct chloroplasts are absent.
E. Pyrenoids are present in protistan algae.
- A, B and D
- B, D and E
- A, B and E
- C, D and E
Which of the following statements are correct with reference to the action of bacteria?
A. Ammonifying bacteria release ammonia in the soil by decay and putrefaction.
B. Nitrifying bacteria convert ammonia to nitrates directly.
C. Nitrogen fixing bacteria can be symbiotic or non-symbiotic.
D. Acetobacter aceti helps in the production of acetone.
E. Mycoderma aceti converts sugar solution to acetic acid.
- A, C and E
- Only A and C
- B, C and D
- Only D and E
Which of the following pairs of fungi belongs to basidiomycetes?
- Penicillium and Sachharomyces
- Alternaria and Mucor
- Penicillium and Agaricus
- Agaricus and Calvatia
The taxonomic system that uses phenotypic similarities along with homologies in organisms is known as
- cladistic taxonomy
- phylogenetic taxonomy
- classical evolutionary taxonomy
- phenetic taxonomy
From which of the following lichens is litmus solution obtained?
- Lecanora
- Usnea
- Evernia
- Roccella
The number of pollen grains produced by head inflorescence of Asteraceae having 10 tubular flowers if each anther produces 20 pollen grains is
- 200
- 400
- 800
- 1,000
The evolutionary trend of sexual reproduction in thallophyta, bryophyte, pteridophyta and gymnosperms is
- gradual elaboration of sporophyte
- gradual elaboration of gametophyte
- elimination of sporophyte
- elimination of gametophyte
Match the organisms given in column I with their features given in column II.
- A - iv, B - iii, C - ii, D - i
- A - ii, B - iv, C - i, D - i
- A - iii, B - ii, C - iv, D - i
- A - iii, B - iv, C - i, D - ii
Assertion (A): Toad stools are brightly coloured but potentially toxic and not edible.
Reasoning (R): Death angel, Amanita phaloides causes 90% of fatalities attributed to mushroom poisoning.
- Both Assertion and Reasoning are true and R is the correct explanation of A.
- Both Assertion and Reasoning are true and R is not the correct explanation of A.
- A is true and R is false.
- Both A and R are false.
From which of the following lichens is litmus solution obtained?
- Lecanora
- Usnea
- Evernia
- Roccella
If it is considered that the first sponges originated from protozoans, which of the following types of protozoans would have been their ancestors?
I. Zooflagellates living in colonies
II. Sarcodines with parasitic nutrition
III. Ciliates with many nuclei
IV. Sporozoans living in colonies
Select the correct answer using the codes given below:
- III and IV
- I alone
- II and III
- III alone
Directions: Assertion and reason type: The question consists of two statements : <o:p>Assertion and Reason. While answering the question you are required to choose any one of the following five responses.<o:p>
(A) If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.<o:p>
(B) If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.<o:p>
(C) If Assertion is true but Reason is false.<o:p>
(D) If Assertion is false and Reason is true.<o:p>
(E) If both Assertion and Reason are false.
Assertion: Pollination occurs in Pinus with the help of wind i.e. anemophilly.
Reason: The pollen grains of Pinus germinate in situ.
- A
- B
- C
- D