Cell division occurs _______ in plants and _______ in animals.
continuously, only upto a certain age
only upto a certain age, continuously
continuously, never
once, twice
Correct Answer :
A. continuously, only upto a certain age
All cells arise from pre-existing cells by a process of cell division. Cell division is the phenomenon of production of daughter cell from parent cell. It occurs continuously in plants and only up to a certain age in animals.
Related Questions
Which one of the following is the first step in taxonomy ?
Naming
Description
Identification
Classification
Taxonomic hierarchy refers to
step-wise arrangement of all categories for classification of plants and animals.
a group of senior taxonomists who decide the nomenclature of plants and animals.
a list of botanists or zoologists who have worked on taxonomy of a species or group.
classification of a species based on fossil record.
Genus represents
an individual plant or animal.
a collection of plants or animals.
group of closely related species of plants or animals.
none of the above.
Identify the correct sequence of taxonomic categories.
Species ? Genus ? Order ? Class ? Family ? Phylum/Division ? Kingdom
Species ? Genus ? Family ? Class ? Phylum/Division ? Order ? Kingdom
Species ? Genus ? Family ? Order ? Class ? Phylum/Division ? Kingdom
Species ? Genus ? Family ? Order ? Class ? Phylum/Division ? Kingdom
Which of the following statement(s) is/are not correct ?
(i) Genus comprises a group of related species which has more characters in common in comparison to species of other genera.
(ii) Three different genera such as Solanum, Datura and Petunia are placed in the family malvaceae.
(iii) In case of plants, classes with a few similar characters are assigned to a higher category called phylum.
Both (i) and (ii)
Only (iii)
Both (ii) and (iii)
All of these
Which of the following statements regarding growth is incorrect?
In animals growth is seen up to a certain age.
Increase in body mass is considered as growth.
Growth by cell division occurs continuously throughout their life span in animals.
Increase in mass and number of individuals is the characteristics feature of animal growth.
Which of the following statements regarding growth is incorrect?
In plants, growth by cell division is seen only upto a certain stage.
Growth exhibited by non-living objects is by accumulation of material on the surface.
A multicellular organism grows by cell division.
Growth in in vitro culture of unicellular organisms can be observed by counting the number of cells.
In multicellular organisms, _____ refers to the production of progeny possessing features more or less similar to those of parents.
growth
reproduction
metabolism
consciousness
Two plants can be conclusively said to belong to the same species if they
have same number of chromosomes.
can reproduce freely with each other and form seeds.
have more than 90 per cent similar genes.
look similar and possess identical secondary metabolites.
Which of the following statements regarding nomenclature is correct?
Generic name always begins with capital letter whereas specific name with small letter.
Scientific name should be printed in italics.
Scientific name when typed or handwritten should be underlined.
All of the above
In majority of higher animals and plants, _____ and _____ are mutually exclusive events.
growth; nutrition
nutrition; consciousness
growth; reproduction
reproduction; consciousness
Which of the following taxonomic category of housefly is incorrectly matched?
Genus Musca
Family Muscidae
Order Primata
Class Insecta
In angiosperm, characters of flowers are used in classification because
flowers are attractive.
flowers are large.
character of flowers are conserved.
none of the above.
Families are characterized on which of the following features of plant species?
External morphology
Anatomy of parts
Vegetative and reproductive parts
Seasonal similarities and variations
Herbarium is a
garden where medicinal plants are grown.
garden where herbaceous plants are grown.
dry garden.
chemical to kill plants.
If an organism is in the same class but not in the same family then it may belong to same
genus
species
variety
order
One of the most important functions of botanical gardens is that
they provide a beautiful area for recreation.
one can observe tropical plants there.
they allow ex-situ conservation of germ plasm.
they provide the natural habitat for wildlife.
Match column-I (Biological name) with column-II (Class) and choose the correct option.
| Column-I | Column-II |
|---|---|
| (Biological name) | (Class) |
| A. Homo sapiens | I. Dicotyledonae |
| B. Musca domestica | II. Mammalia |
| C. Mangifera indica | III. Monocotyledonae |
| D. Triticum aestivum | IV. Insects |
A IV; B II; C I; D III
A II; B IV; C III; D I
A II; B IV; C I; D III
A II; B I; C IV; D III
Study the following statements and select the correct description of botanical garden.
(i) Plant species are grown for identification purposes.
(ii) Labeling of each plant consists of its botanical name/ scientific name and its family.
(iii) Specimens are preserved in the jars and containers.
(iv) It is a type of store house which contains dried, pressed and preserved plant specimens on sheet.
(v) Plant specimen contains a labeling of information about date and place of collection.
(i) and (ii) only
(i), (ii) and (iii) only
(ii) and (iv) only
All the five statements.
Refer the botanical name of wheat Triticum aestivum and identify the statement which correctly describes it.
The second word belongs to genus and starts with a small letter.
Both the words Triticum aestivum denote the specific epithet.
The first word Triticum denotes the genus which starts with a capital letter.
The first word Triticum denotes the specific epithet while the second word denotes the genus.
Match the common name given in column I with their taxonomic category family given in column II and choose the correct combination from the options given below.
| Column-I | Column-II |
|---|---|
| (Common Name) | (Taxonomic categoryFamily) |
| A. Man | I. Poaceae |
| B. Datura | II. Anacardiaceae |
| C. Mango | III. Solanaceae |
| D. Wheat | IV. Hominidae |
A IV, B III, C II, D I
A IV, B III, C I, D II
A I, B II, C III, D IV
A I, B III, C II, D IV
Which of the following is not a characteristic of life?
Reproduction
Complex chemical organization
Adaptation to environmental changes
Differentiation from cells to tissues
The taxonomic unit phylum in the classification of animals is equivalent to which hierarchial level in classification of plants ?
Class
Order
Division
Family
Which of the following taxonomic aid provides information for the identification of names of species found in an area?
Monograph
Manual
Flora
Periodical
Match column-I with column-II and choose the correct combination from the options given below.
| Column-I | Column-II |
|---|---|
| A. National Botanical | I. Carolus Linneaus Research Institute |
| B. Indian Botanical | II. Taxon Garden |
| C. Binomial | III. Howrah (India) Nomenclature |
| D. A unit of | IV. Lucknow classification |
A III; B IV; C I; D II
A IV; B III; C I; D II
A IV; B III; C II; D I
A IV; B I; C III; D II
Taxa differs from taxon due to being
a higher taxonomic category than taxon.
lower taxonomic category than taxon.
the plural of taxon.
the singular of taxon.
Each statement in the key is called _______.
lead
catalogues
manuals
monographs
Which of the following aspects is an exclusive characteristic of living things ?
Isolated metabolic reactions occur in vitro.
Increase in mass from inside only.
Perception of events happening in the environment and their memory.
Increase in mass by accumulation of material both on surface as well as internally.
The keys are based on contrasting characters generally in a pair called _______.
flora
couplet
both (a) and (b)
manuals
The disadvantage of using common names for species is that
the names may change.
one name does not apply universally.
one species may have several common names and one common name may be applied to two species.
all of the above