Question:
A plant species shows several morphological
variations in response to altitudinal gradient. Whengrownundersimilarconditionsofgrowth, the morphological variations disappear and all the variants have common morphology. What are these variants called?
Answer:
A plant species shows several morphological variations in response to altitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear and all the variants have common morphology. These variants are called ecotype. It is a group of genetically similar plant showing similarity when grown in same environmental and geographical regions. The same’environment provide them the similar abiotic factors like soil, pH, temperature etc. When they grown in two different
geographical regions, they are exposed to different abiotic characters thus, it affects their growth and development bringing changes in their external morphological features but, they have the same genetic constitution.
The Living World
Q 1.
Some of the properties of tissues are not the constituents of its cells. Give three examples to support the statement.
Q 2.
What does ICZN stand for?
Q 3.
A plant may have different names in different regions of the country or world. How do botanists solve this problem?
Q 4.
Given below is the scientific name of mango. Identify the correctly written name.
Mangifera Indica Mangifera indica
Q 5.
Amoeba multiplies by mitotic cell division. Is this phenomena growth or reproduction? Explain.
Q 6.
What does ICZN stand for?
Q 7.
Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.
Q 8.
Linnaeus is considered as Father of Taxonomy. Name two other botanists known for their contribution to the field of plant taxonomy?
Q 9.
Why are the classification systems changing every now and then?
Q 10.
Amoeba multiplies by mitotic cell division. Is this phenomena growth or reproduction? Explain.
Q 11.
Which is the largest botanical garden in the world? Name a few well known botanical gardens in India.
Q 12.
A student of taxonomy was puzzled when told by his professor to look for a key to identify a plant. He went to his friend to clarify what ‘Key’ the professor was referring to? What would the friend explain to him?
Q 13.
What is a monograph?
Q 14.
Match the following and choose the correct option.
| A. |
Family |
(0 |
tuberosum |
| B. |
Kingdom |
(ii) |
Polymoniales |
| C. |
Order |
(iii) |
Solarium |
| D. |
Species |
(iv) |
Plantae |
| E. |
Genus |
(v) |
Solanaceae |
Options:
(a) D—(i), C—(ii), E—(iii), B—(iv), A-(v)
(b) E—(i), D—(ii), B—(iii), A—(iv), C-
(c) D-C), E—(ii), B—(iii), A—(iv), C-(v)
(d) E—(i), €—(ii), B—-(iii), A-(iv), D-(v)
Q 15.
Do you consider a person in coma-living or dead?
Q 16.
Some of the properties of tissues are not the constituents of its cells.
Give three examples to support the statement.
Q 17.
What is the similarity and dissimilarity between "whole moong daal"and "broken moong daal"in terms of respiration and growth? Based on these parameters classify them into living or nonliving?
Q 18.
How is a key helpful in the identification and classification of an organism?
Q 19.
Brassica compestris Linn
a. Give the common name of the plant.
b. What do the first two parts of the name denote?
c. Why are they written in italics?
d. What is the meaning of Linn written at the end of the name?
Q 20.
Linnaeus is considered as Father of Taxonomy. Name two other botanists known for their contribution to the field of plant taxonomy.
Q 21.
What is a Monograph?
Q 22.
International Code of Botanical Nomenclature (ICBN) has provided a code for classification of plants. Give hierarchy of units of classification botanists follow while classifying plants and mention different’Suffixes’ used for the units.
Q 23.
In a given habitat we have 20 plant species and 20 animal species. Should we call this as ‘diversity’ or ‘biodiversity’? Justify your answer.
Q 25.
Can you identify the correct sequence of taxonomical categories?
(a) Species —> Order —> Phylum —> Kingdom
(b) Genus—) Species—> OrderKingdom
(c) Species —> Genus —>Order —> Phylum
Q 26.
What is meant by living? Give any four defining features of life forms.
Q 27.
Couplet in taxonomic key means .
Q 28.
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 29.
Why are living organisms classified?
Q 30.
Which is the largest botanical garden in the world? Name a few well known botanical gardens in India.
Q 31.
A ball of snow when rolled over snow increases in mass, volume and size. Is this comparable to growth as seen in living organisms? Why?
Q 33.
What do we learn from identification of individuals and populations?
Q 34.
A ball of snow when rolled over snow increases in mass, volume and size. Is this comparable to growth as seen in living organisms? Why?
Q 35.
Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
Q 36.
How do you prepare your own herbarium sheets? What are the different tools you carry with you while collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomical studies?
Q 37.
Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.
Q 38.
In a given habitat we have 20 plant species and 20 animal species. Should we call this as ‘diversity' or ‘biodiversity'? Justify your answer. –
Q 39.
Define a taxon. What is meant by taxonomic hierarchy. Give a flow diagram from the lowest to highest category for a plant and an animal.
What happens to the number of individuals and number of shared characters as we go up the taxonomical hierarchy?
Q 40.
Define and understand the following terms:
(i) Phylum (ii) Class (iii) Family
(iv) Order (v) Genus
Q 41.
Do you consider a person in coma-living or dead?
Q 42.
Brinjal and potato belong to the same genus Solarium, but to two different species. What defines them as separate species?
Q 43.
What different criteria would you choose to classify people that you meet often?
Q 44.
A plant species shows several morphological
variations in response to altitudinal gradient. Whengrownundersimilarconditionsofgrowth, the morphological variations disappear and all the variants have common morphology. What are these variants called?
Q 45.
What are taxonomical aids? Give the importance of herbaria and museums. How are Botanical gardens and Zoological parks useful in conserving biodiversity?
Q 46.
A scientist has come across a plant which he feels is a new species. How will he go about its identification, classification and nomenclature.
Q 47.
What is the similarity and dissimilarity between “whole moong daal” and “broken moong daal” in terms of respiration and growth? Based on these parameters classify them into living or nonliving?
Q 48.
A scientist has come across a plant which he feels is a new species. How will he go about its identification, classification and nomenclature? .
Q 49.
Brassica campestris Linn
(a) Give the common name of the plant.
(b) What do the first two parts of the name denote?
(c) Why are they written in italics?
(d) What is the meaning of Linn written at the end of the name?
Q 50.
The number and kinds of organism is not constant. How do you explain this statement?
