NEETprep Bank NEET Botany The Living World Questions Solved


The third name in trinomial nomenclature is

(1) Species

(2) Subgenus

(3) Subspecies

(4) Ecotype

Audio Explanation:


Trinomial nomenclature

Genus - Species - Subspecies

 

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The suffix-phyta indicates

(1) Family

(2) Order

(3) Class

(4) Division

Audio Explanation:


suffix is a term that is kept after the root word of a word, phyta is used as a suffix, it indicates division.

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Two or more species occupying same or overlapping areas are

(1) Sympatric

(2) Sibling

(3) Subspecies

(4) Allopatric

Audio Explanation:


In biology, two species or populations are considered sympatric when they exist in the same geographic area. Allopatric species are separated by geographical barrier. So, sympatric option is more appropriate here. 

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An attribute found in plants but not animals is

(1) Metabolism

(2) Sexual reproduction

(3) Autotrophy

(4) Asexual reproduction

Audio Explanation:


Plants are autotrophs. Animals are not. 

 

Also some simple animals reproduce by asexual reproduction so that option (4) can't be right, because asexual reproduction found in both simple animals & plants . (NCERT, Chapter: "Reproduction In Organisms" , Page No. 5)

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In five-kingdom classification, unicellular green algae are included in the kingdom

(1) Metaphyta

(2) Protista

(3) Monera

(4) Metazoa

Audio Explanation:


According to NCERT Book (Chapter: Biological Classification, Page No. 18), Chlamydomonas & Chlorella (Examples of Unicellular green algae) are in Kingdom Protista as both are unicellular and eukaryotic. 

Please note that Blue Green Algae(Cyanobacteria) is in Kingdom Monera. (prokaryotic)

Multicellular algae are in Kingdom Plantae(Metaphyta). 

So, Algae are present in three kingdoms in 5 kingdom classification. 

 

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Which of the following is less general in chracters as compared to genus

(1) Species

(2) Family

(3) Class

(4) Division

Audio Explanation:


A genus is a group of similar species.

Genus 'Homo' refers to any of the species under it. So, genus is more general/less specific compared to species belonging to it.

Species 'Homo Sapiens' refers to humans which is less general and more specific than 'Homo' Genus. 

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Consider the following two statements:

I. In the single-celled organisms, we are not very clear about the usage of the two terms – growth and reproduction.

II. When it comes to unicellular organisms like bacteria, unicellular algae or amoeba, reproduction is synonymous with growth, i.e., increase in number of cells.

(1) Both I and II are true and II explains I

(2) Both I and II are true but II does not explain I

(3) I is true but II is false

(4) Both I and II are false

Audio Explanation:


(1) Cell division leads to growth in multicelluular organisms, in unicellular organisms it leads to both (growth & reproduction).

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Consider the following two statements:

I. Cellular organization of the body is the defining feature of life forms.

II. Metabolic reactions cannot be demonstrated outside the body in cell-free systems.

(1) Both I and II are true and II explains I

(2) Both I and II are true but II does not explain I

(3) I is true but II is false

(4) Both I and II are false

Audio Explanation:


(3) Metabolic reactions can be demonstrated outside the body in cell-free systems but they are neither living nor non-living.

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The most obvious & complicated feature of all living organisms is:

(1) The ability to sense their surroundings or environment and respond to these environmental stimuli.

(2) Reproduction - sexual or asexual - for production of progeny of own kind.

(3) The ability to growth in size due to cell division.

(4) Presence of complex organs systems such as digestive and nervous system.

Audio Explanation:


(1) All living organisms can sense and respond to environmental cues and these responses are critical in maintaining homeostasis. The responses are directional and meaningful.

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Identify the incorrect statement:

(1) Biological names are gnerally in Latin and written in italics. They are Latinised or derived from Latin irrespective of their origin.

(2) The first word in a biological name represents the genus while the second component denotes the specific epithet.

(3) Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their vernacular origin.

(4) The first word denoting the genus starts with a capital letter while the specific epithet starts with a small letter.

Audio Explanation:


(3) Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their LATIN origin.

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