Species

Q.

What is self-incompatibility?

Q.

8. Try to collect all the currently accepted meanings for the word ‘species’. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand and bacteria on the other hand.

Q. If we completely remove the decomposers from an ecosystem, the functioning of the ecosystem will be adversely affected because:

1. Minerals cycle will be blocked
2. Herbivores will not receive solar energy
3. Solar energy flow will be blocked
4. Rate of decomposition of other compounds will be very high

Q.

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

1. Species
2. Division
3. Family
4. Class

Q.

Lion, cat and tiger belong to a common ___________.

Q.

How many total plant species are found in India?

Q. Lion and tiger belong to the same _______ but different _______.

1. Species, Genus
2. Family, Genus
3. Genus, Family
4. Genus, Species

Q. Read the following statements and find out the incorrect statement.

a. Majority of flowering plants use a range of animals as pollinating agents.

b. Bees, butterflies, flies, beetles, wasps, ants, moth, birds (sunbirds and humming birds) and bats are the common pollinating agents.

c. Among the animals, insects particularly bees are the dominant biotic pollinating agents.

d. Even larger animals such as some primates (lemurs), arboreal (tree dwelling) rodent, or even reptiles (gecko lizard and garden lizard) have also been reported as pollinators in some species.

e. Often, flowers of animal pollinated plants are specifically adapted for a particular species of animal.

1. $a$ and $b$
2. $b$ and $c$
3. $d$ and $e$
4. None of the above

Q.

what is the difference between identification and classification. elaborate

Q.

What is mean by homonym?

Q.

The largest unit of classification is

1. Phylum

2. Kingdom

3. Species

4. Genus

Q. What is true for individuals of the same species?

1. Share the same niche
2. Live in the same habitat
3. Interbreeding
4. Live in different habitats

Q. Which group of characters of whale justify its inclusion in the class mammalia ?

1. Vertebral column, lungs and $4-$chambered heart
2. Gills, fins and viviparity
3. Lungs, $4-$chambered heart & kidneys
4. Hair skin, mammary glands and viviparity

Q. All eukaryotic unicellular organisms belong to

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

Q. Cyanobacteria and heterotrophic bacteria have been clubbed together in Eubacteria of kingdom Monera as per the “Five Kingdom Classification” even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified? If so, why?

Q.

Which of the following correctly represents the correct order of various levels of classification

1. Species ⇥ Genus⇥ Family⇥ Order⇥ Class ⇥ Phylum

2. Phylum ⇥Genus ⇥ Order ⇥ Family⇥ Class ⇥ Species

3. Species ⇥ Family⇥ Class ⇥ Order ⇥ Genus ⇥ Phylum

4. Class ⇥ Family⇥ Order ⇥ Genus ⇥ Phylum ⇥ Species.

Q. Animals are classified into heirarchical groups. Which level of classification has the largest number of species?

1. Genus
2. Order
3. Phylum
4. Class

Q.

Species are considered as

1. real basic units of classification

2. the lowest units of classification

3. artificial concept of human mind which cannot be defined in absolute terms

4. real units of classification devised by taxonomists

Q. Criterion for interbreeding is not applicable for all species because

1. many organisms reproduce sexually
2. many organisms reproduce asexually
3. many organisms are specific for certain habitat
4. many organisms are situated in a restricted environment

Q. Decomposers play an important role in the ecosystem by degrading the dead organic matter. What will be the possible effect if they are removed from the ecosystem?

1. Minerals will be trapped in the dead organisms
2. Herbivores will not receive solar energy
3. Flow of solar energy will be blocked
4. Rate of decomposition of compounds will be very high

Q.

In which species, humans belong?

Q. Interbreeding is possible between two members of a

1. genus
2. order
3. family
4. species

Q.

Attempt giving a clear definition of the term species

Q. In hierarchical classification, class occupies a place between

1. Kingdom and phylum
2. Order and family
3. Phylum and order
4. Family and genus

Q.

What do we learn from identification of individuals and populations?

Q.

Which of the following categories occupies the top-most position of the classification triangle?

1. Species

2. Order

3. Kingdom

4. Genus

Q.

What is the definition of a species?

Q. Assertion [A]: Phylogeny is the developmental history of a species.
Reason [R]: Species is a basic unit of taxonomy.

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

Q. ln a taxonomic hierarchy, genus is interpolated between

1. order and species
2. phylum and order
3. kingdom and class
4. family and species

Q. A physical barrier separates a single species, causing two separate populations to form. Over time these two populations adapt to their environments. Eventually, these two populations are no longer able to successfully reproduce with each other. Such species are called

1. peripatric species
2. parapatric species
3. sympatric species
4. allopatric species