Complete Biology Test - SA II - Class 9 MCQ

To determine which one of the following options is wrongly matched, we need to analyze each option individually.
A: Puccinia – Smut
- Puccinia is a genus of fungi that includes many plant pathogens.
- Smut, on the other hand, is a common name for various diseases caused by different species of fungi.
- The match between Puccinia and Smut is correct. Therefore, option A is not wrongly matched.
B: Root pressure – Guttation
- Root pressure refers to the pressure exerted by the roots of some plants, forcing water and dissolved nutrients upwards into the stem.
- Guttation, on the other hand, is the process by which water droplets are exuded from the tips or edges of leaves.
- The match between Root pressure and Guttation is correct. Therefore, option B is not wrongly matched.
C: Cassia – Imbricate aestivation
- Cassia is a genus of flowering plants that belongs to the family Fabaceae.
- Imbricate aestivation refers to the arrangement of sepals or petals in a floral bud, where they overlap each other.
- The match between Cassia and Imbricate aestivation is correct. Therefore, option C is not wrongly matched.
D: Root – Exarch protoxylem
- Roots are important organs of vascular plants that anchor them to the ground and absorb water and nutrients.
- Exarch protoxylem refers to the arrangement of primary xylem in a root, where the first-formed xylem elements are located towards the periphery.
- The match between Root and Exarch protoxylem is correct. Therefore, option D is not wrongly matched.
Based on the analysis above, all the options are correctly matched. Therefore, the answer provided (option A) is incorrect.

Robert Koch was the first pathologists who established that disease are mainly caused by pathogen. Disease causing microbes are called pathogen.

Movement of air occurs due to difference in air pressure of two places. It is not influenced by rotation of earth, vaporization and condensation of water vapour and topography over which passes.

Pinna is the external opening of ears. Pinna is characteristic feature of Mammalia.

Single-celled eukaryotes are included in the kingdom Protista.
Explanation:
Single-celled eukaryotes are organisms that have a true nucleus and other membrane-bound organelles within their cells. They are classified as protists, which is a diverse group of eukaryotic microorganisms that do not fit into other kingdoms such as plants, animals, or fungi.
Here are the reasons why single-celled eukaryotes are included in the kingdom Protista:
- Characteristics: Protists are defined by their characteristics, which include being eukaryotic, mostly unicellular, and lacking specialized tissues. Single-celled eukaryotes possess these characteristics, which is why they are classified as protists.
- Diversity: The kingdom Protista is incredibly diverse and encompasses a wide range of organisms, including unicellular algae, protozoans, and slime molds. Single-celled eukaryotes make up a significant portion of this diversity.
- Evolutionary history: Protists are believed to be some of the earliest eukaryotes to have evolved on Earth. Single-celled eukaryotes likely represent the ancestral forms from which multicellular organisms, such as plants and animals, evolved.
- Ecological roles: Single-celled eukaryotes play important ecological roles in various ecosystems. They can be primary producers, consuming organic matter, or serving as prey for larger organisms. Their inclusion in the kingdom Protista helps to understand their ecological functions and relationships with other organisms.
In conclusion, single-celled eukaryotes are classified as protists in the kingdom Protista due to their eukaryotic nature, diversity, evolutionary history, and ecological roles.

Common Characteristics of Multicellular Fungi, Filamentous Algae, and Protonema of Mosses:
1. Multiplication by fragmentation: All three organisms can reproduce through fragmentation, which is the breaking off or separation of a portion of the organism to form a new individual. This process allows for rapid multiplication and colonization of new areas.
2. Mode of Nutrition: Multicellular fungi, filamentous algae, and protonema of mosses all obtain their nutrition in different ways:
- Multicellular fungi are heterotrophic organisms that obtain their nutrition by decomposing organic matter or by forming mutualistic relationships with other organisms.
- Filamentous algae are photosynthetic organisms that obtain their nutrition through photosynthesis, using sunlight, carbon dioxide, and water to produce carbohydrates and oxygen.
- Protonema of mosses are also photosynthetic and obtain their nutrition through photosynthesis.
3. Members of Kingdom Plantae: Filamentous algae and protonema of mosses are both members of the Kingdom Plantae, which includes all plants. However, multicellular fungi belong to the Kingdom Fungi, which is a separate kingdom from plants.
Therefore, the correct answer is B: Multiplication by fragmentation. This is a common characteristic shared by multicellular fungi, filamentous algae, and protonema of mosses.

Iodine test is used to detect carbohydrates in food items. Food item containing carbohydrates gives blue colour in presence of iodine.

In atmosphere oxygen is found in form of ozone (O₃)and oxygen(O₂). Oxygen is found in lower layers and ozone in ozonosphere.

Carl Linnaeus is often called the Father of Taxonomy. His system for naming, ranking, and classifying organisms is still in wide use today.

Carl Linnaeus, a Swedish naturalist and an explorer was the first to frame principles for defining natural genera and species of organisms and to create a uniform system for naming them - binomial nomenclature.

Chronic disease cause long term effects on health as these disease lasts for long duration and harms the vital organs. Lice, acne etc. have no long term effects on our health but jaundice causes long term effects on health.

Atmosphere play very important role in temperature of earth. If there were no atmosphere surround the earth, then the temperature of the earth increase during day and decrease during night.

The five kingdom of classification was proposed by R. Whittaker. These kingdoms were Monera, Protista, Fungi, Plantae and Animalia.

The correct answer is B: 1-D, 2-A, 3-C, 4-B.
Let's match each disease with its corresponding response:
- Hepatitis: It is a disease that causes inflammation of the liver.
- Japanese encephalitis: It is a viral infection that affects the brain.
- Dengue: It is a viral infection that affects the platelets in the blood.
- Fungal diseases: These diseases primarily affect the skin.
Now let's match these diseases with their corresponding responses:
- Hepatitis: It affects the liver.
- Japanese encephalitis: It affects the brain.
- Dengue: It affects the platelets.
- Fungal diseases: They primarily affect the skin.
Therefore, the correct match is B: 1-D, 2-A, 3-C, 4-B.

The envelop of air surrounding the surface of planets is called atmosphere. Earth, Venus and Mars all these planets have their own atmosphere

The skull having two occipital condyle is called dicondylic skull. The members of class amphibians and mammals possesses dicondylic skull.

The correct matching of the given options is:
(1) Protozoa - C. Malaria
(2) Virus - B. Chicken Pox
(3) Bacteria - D. Tuberculosis
(4) Worms - A. Elephantiasis
Explanation:
Protozoa:
- Protozoa are single-celled organisms.
- They cause diseases like malaria.
- Malaria is caused by the parasite Plasmodium, which is transmitted through the bite of infected mosquitoes.
Virus:
- Viruses are microscopic infectious agents.
- They cause diseases like chickenpox.
- Chickenpox is caused by the varicella-zoster virus and is highly contagious.
Bacteria:
- Bacteria are single-celled microorganisms.
- They cause diseases like tuberculosis.
- Tuberculosis is caused by the bacterium Mycobacterium tuberculosis and primarily affects the lungs.
Worms:
- Worms are multicellular organisms.
- They cause diseases like elephantiasis.
- Elephantiasis is caused by parasitic worms transmitted through mosquito bites.
Therefore, the correct matching is:
- Protozoa - C. Malaria
- Virus - B. Chicken Pox
- Bacteria - D. Tuberculosis
- Worms - A. Elephantiasis
Answer: A. 1-C, 2-B, 3-D, 4-A

The atmosphere of Venus and Mars planet consists of mainly carbon dioxide gas. Due to presence of higher amount of carbon dioxide gas temperature increases very high during day and low during night.

The Whittaker’s classification includes five kingdom in which unicellular organisms having Eukaryotic cell are placed in kingdom Protista.

To determine which organism or pair of organisms is correctly assigned to its taxonomic group, we need to analyze each statement and compare it to the known taxonomic classification.
A: Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
- This statement is incorrect. Paramecium and Plasmodium belong to the kingdom Protista, while Penicillium belongs to the kingdom Fungi.
B: Nostoc and Anabaena are examples of protista.
- This statement is incorrect. Nostoc and Anabaena belong to the kingdom Bacteria, specifically the phylum Cyanobacteria.
C: Yeast used in making bread and beer is a fungus.
- This statement is correct. Yeast is a single-celled organism that belongs to the kingdom Fungi.
D: Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan.
- This statement is incorrect. Lichen is a composite organism formed from the symbiotic association of an algae and a fungus.
Therefore, the correct answer is C: Yeast used in making bread and beer is a fungus.

Biologically important compounds that contain both oxygen and nitrogen is protein and nucleic acid. These compounds contain oxygen and nitrogen besides carbon and hydrogen.

Which statement is wrong for viruses?
There are four statements given about viruses, and we need to identify the incorrect one. Let's analyze each statement:
A: All are parasites.
- This statement is correct. Viruses are obligate intracellular parasites because they require a host cell to replicate.
B: Antibiotics have no effect on them.
- This statement is correct. Antibiotics are designed to target bacterial cells, not viruses. Viruses are not affected by antibiotics.
C: They have the ability to synthesize nucleic acids and proteins.
- This statement is correct. Once inside a host cell, viruses hijack the cellular machinery to synthesize their own nucleic acids and proteins.
D: All of them have helical symmetry.
- This statement is incorrect. Not all viruses have helical symmetry. Viruses can have various shapes and symmetries, including helical, icosahedral, or complex structures.
Therefore, the incorrect statement is D: All of them have helical symmetry.
In summary, the correct answer is D. Not all viruses have helical symmetry.

Major part of fresh water is located on mountain tops ans glaciers in form of ice caps and glacier. Major portion of water found on earth is salty and found in ocean and seas.

Rise is temperature of water due to addition of hot water into it is known as thermal pollution. Thermal pollution causes death of aquatic organisms.

The correct answer is option C: (a) and (c) are correct.
Let's analyze each option to determine which one is not correctly matched:
A. Father of taxonomy - Mendel
- This statement is incorrect. Gregor Mendel is not considered the father of taxonomy. He is known as the father of genetics, as he conducted pioneering experiments on pea plants and established the basic principles of heredity.
B. Five kingdom classification - R.H. Whittaker
- This statement is correct. R.H. Whittaker proposed the five kingdom classification system in 1969. The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia.
C. Binomial nomenclature - Darwin
- This statement is incorrect. Binomial nomenclature, the system of naming species using two Latin words (genus and species), was developed by Carl Linnaeus, not Darwin. Linnaeus is often referred to as the father of modern taxonomy.
D. Two kingdom classification - Linnaeus
- This statement is correct. Carl Linnaeus proposed the two kingdom classification system in his work "Systema Naturae" in 1735. The two kingdoms were Plantae and Animalia.
Therefore, the option that is not correctly matched is C. Binomial nomenclature - Darwin.

To match the given terms with their correct responses, we need to understand the diseases and organisms associated with each term. Here is a detailed explanation of each term and its corresponding response:
1. Sleeping sickness:
- Sleeping sickness is caused by the parasite Trypanosoma.
- It is a parasitic disease that affects the nervous system.
- The correct response for sleeping sickness is (B) Trypanosoma.
2. Kala-azar:
- Kala-azar, also known as visceral leishmaniasis, is caused by the protozoan parasite Leishmania.
- It affects the liver, spleen, and bone marrow.
- The correct response for Kala-azar is (D) Leishmania.
3. Roundworm found in human intestine:
- The roundworm found in the human intestine is known as Ascaris lumbricoides.
- It is one of the most common intestinal parasites in humans.
- The correct response for the roundworm found in the human intestine is (A) Ascaris lumbricoides.
4. Acne:
- Acne is a common skin condition characterized by pimples, blackheads, and whiteheads.
- It is caused by the overproduction of oil and the accumulation of dead skin cells.
- The correct response for acne is (C) Staphylococci.
Based on the above explanations, we can conclude that the correct matching is:
- 1-B (Sleeping sickness - Trypanosoma)
- 2-D (Kala-azar - Leishmania)
- 3-A (Round worm found in human intestine - Ascaris lumbricoides)
- 4-C (Acne - Staphylococci)
Therefore, the correct response is C.