9th class biology chapter 3 short questions:
As we know Short questions are something very important for exams, but how can we get short questions from the book when there are only paragraphs and no short questions specifically given?
SO HERE YOU CAN FIND "9th class biology chapter 3 short questions" THAT WILL HELP YOU ALOT IN YOUR EXAMS.
BIODIVERSITY
Question # 1: Define the term Biodiversity.
Answer: The term "biodiversity" has been derived from 'bio' and 'diversity'. 'Bio' means life and 'diversity' means variety within a species and among species. Biodiversity is a measure of the variety of organisms present in a different ecosystem.
FOR EXAMPLE, The diversity of plant (flora) and animals (fauna) in the region depends on the climate, altitude, soils, and presence of other species.
Question # 2: Define "taxonomy" and :systematics".
Answer: Taxonomy:
The branch of biology which deals with classification is called taxonomy.
Systematics:
The branch of biology which deals with classification and also traces the evolutionary history of organisms known as systematics.
Question # 3: Write the main aims of taxonomy and systematics.
Answer: Following are the main aims of taxonomy and systematics.
1; To determine similarities and differences among organisms so that they can be studied easily.
2: To find the evolutionary relationship among organisms.
Question # 4: Write the names of seven main taxonomic ranks.
Answer: The following are the seven main taxonomic ranks.
1:Kingdom
2:Phylum
3:Class
4:Order
5:Family
6:Genes
Question # 5: What is a simple classification of humans?
Answer: The classification of human is,
Taxa Human
Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Primates
Family Hominidae
Genus Homo
Species H.sapiens
Question # 6: What is the classification of a pea?
Answer: The classification of pea is,
Taxa Pea
Kingdom Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Fabales
Family Fabaceae
Genus Pisum
Species P. staivum
Question # 7: Who introduced five kingdoms of classification? and on which factors it was based?
Answer: In 1967, Robert Whittaker introduced five-kingdom of classification.
this system was based upon,
1: The level of cellular organization i. e. prokaryotic, unicellular eukaryotic, and multicellular eukaryotic
2: The principal modes of nutrition i. e. Photosynthesis, absorption, and ingestion.
Question # 8: Who modified the five-kingdom of classification?
Answer: In 1988 Margulis and Schwartz modified the five-kingdom classification of Whittaker.
They consider genetics along with cellular organization and modes of nutrition in classification. They classified the organisms into five-kingdoms as proposed by Whittaker.
Question # 9:Write the names of five kingdoms.
Answer: The following are the five kingdoms
1: Kingdom Monera
2: Kingdom Protista
3: Kingdom Fungi
4: Kingdom Plantae
5: Kingdom Animalia
Question # 10: What is the mode of nutrition in fungi?
Answer: Fungi get their nutrition by absorbing organic compounds from the environment. Fungi are heterotrophic: they rely solely on carbon obtained from other organisms for their metabolism and nutrition.
Question # 11: What are "prions" and "viroids"?
Answer: Prions:
Prions are composed of proteins only.
Vrioidis:
Viroids are composed of circular RNA only.
Both these particles causes infectious diseases in certain plants.
Question # 12: What are the rules of writing scientific names?
Answer: The following are the rules of writing scientific names:
1: Scientific names are usually printed in italics, such as Homo sapiens. When handwritten they are underlined.
2: The first term (generic name) always begins with capital letters, While the species name is never capitalized.
3: The scientific name is generally written in full when it is first used. But when several species from the same genus are being listed, it may then be abbreviated by just using an initial for the genus; for example, Escherichia coli becomes E. coli.
Question # 13: What are the scientific names of "onion", "starfish", and "house crow"?
Answer: The scientific name of onion is "Allium cepa".
The scientific name of starfish is "Asteris rubens".
The scientific name of house crow is "Corvus splendens:.
Question # 14: Define the terms "extinct" and "endangered" .
Answer: EXTINCT:
Extinction of a particular animal or plant species occurs when there are no more individuals of that species alive anywhere in the world - the species has died out.
Endangered:
A specie of animal or plant that is seriously at risk of extinction.
Question # 15: Write the name of endangered species in Pakistan?
Answer: The following are the endangered species in Pakistan.
1: Indus dolphin
2: Marco polo sheep
3: Houbara bustard
You can also find other chapters short questions in my blogs.
link below:
chapter 1 short questions:
chapter 2 short questions:
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