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Read the given passage and answer the questions that follow. Algae are photosynthetic creatures that have pigments that aid in photosynthesis, such

Reading Comprehension

Read the given passage and answer the questions that follow.
Algae are photosynthetic creatures that have pigments that aid in photosynthesis, such as chlorophyll. They do not, however, have the actual stems, roots or leaves found in vascular plants. While some of them have many cells, others are unicellular. They might establish colonies as well. The majority of algae are aquatic. Some are terrestrial, and they can be found on rocks, trees and moist soil. Certain algae species coexist well with other living things. For instance, lichens are a symbiotic relationship between green (and often blue-green) algae and fungi. Algae are members of a multiphyletic group. This indicates that there is no common ancestor and that the species in this category are not necessarily closely related. They do not have other morphoanatomical characteristics typical of vascular plants, but they do have one thing in common: they are eukaryotes with the principal pigment being chlorophyll, which allows them to perform photosynthesis. Phycology is the scientific name for the study of algae. The blue-green algae is one example of a reference. But some sources do not classify them as algae because they are prokaryotes.

1) Question

According to the passage, which is the main pigment in algae for photosynthesis?

A.

Carotenoid

B.

Melanin

C.

Xanthophyll

D.

Chlorophyll

Correct option is D

The correct answer is option (d).
The passage clearly states that algae are photosynthetic creatures that contain pigments such as chlorophyll, which is the principal pigment that enables them to perform photosynthesis.
Other options are incorrect because:
(a) Carotenoid – These are accessory pigments, not the main pigment mentioned in the passage.
(b) Melanin – This pigment is related to skin/hair coloration in animals and not involved in photosynthesis.
(c) Xanthophyll – Another accessory pigment in photosynthesis but not the principal pigment.

2) Question

What is the central theme of the passage?

A.

The symbiotic relationship between algae and fungi

B.

The prokaryotic nature of blue-green algae

C.

The diversity and characteristics of algae

D.

The anatomy of vascular plants

Correct option is C

The correct answer is option (c).
The passage provides a comprehensive description of algae – their structure, types (unicellular/multicellular), habitat, pigments, relationship with fungi, classification as a multiphyletic group, and their ability to perform photosynthesis. All these points reflect the diverse nature and features of algae.
Other options are incorrect because:
(a) The symbiotic relationship between algae and fungi – Mentioned briefly as one point (lichens), but not the central theme.
(b) The prokaryotic nature of blue-green algae – Touched upon only at the end and noted as a classification dispute.
(d) The anatomy of vascular plants – Only used in comparison to algae; not the main focus of the passage.

3) Question

What does the term 'multiphyletic group' mean in the context of algae?

A.

Having diverse morphoanatomical characteristics

B.

Being closely related species

C.

Having a common ancestor

D.

No common ancestor, not closely related

Correct option is D

The correct answer is option (d).
The passage defines algae as belonging to a multiphyletic group, meaning the species under this classification do not share a common ancestor and are not necessarily closely related. This is explicitly stated in the passage.
Other options are incorrect because:
(a) Having diverse morphoanatomical characteristics – While algae may differ morphologically, this is not the definition of multiphyletic.
(b) Being closely related species – This defines a monophyletic or paraphyletic group, not multiphyletic.
(c) Having a common ancestor – Opposite of the definition of a multiphyletic group.

4) Question

Which statement accurately describes vascular plants based on the information in the passage?

A.

Vascular plants lack stems, roots and leaves.

B.

Algae and vascular plants share the same morphoanatomical characteristics.

C.

Vascular plants are unicellular in structure.

D.

Vascular plants have true stems, roots and leaves, unlike algae.

Correct option is D

The correct answer is option (d).
The passage contrasts algae with vascular plants, stating that algae do not have "the actual stems, roots or leaves found in vascular plants," which implies that vascular plants do possess these structures.
Other options are incorrect because:
(a) Vascular plants lack stems, roots and leaves – Directly contradicts the passage.
(b) Algae and vascular plants share the same morphoanatomical characteristics – The passage clearly states they do not.
(c) Vascular plants are unicellular in structure – Incorrect; vascular plants are multicellular organisms.

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