OSSSC TGT Science CBZ Mock Test - 2 - OTET MCQ

Mastery over the subject matter is one of the very essential factors of a teacher that affect the process of learning. 

If different tasks are used by the teacher to teach her students through different styles of teaching, the teacher can be said to be adopting the theory given by Gardner.

The triarchic theory of intelligence is also called the three forms of intelligence. Based on this theory, research on human intelligence take a more cognitive approach. 
Sternberg explained only three types of intelligence: Componential or analytical sub theory, Experiential or creative sub theory, and Contextual or practical sub theory. 
Hence, the correct answer is, 'Social.'

In electron transport chain, there are 7 electron acceptors, which are as follows Co − Q → Cyt b → Cyt c₁ → Cyt c → Cyt a → Cyt a₃ → O₂. Oxygen is the ultimate electron acceptor. These electron acceptors are present in a specific sequence along inner mitochondrial membrane.

There are three points in the TCA cycle where NAD⁺ is reduced to NADH + H⁺ and one point where FAD⁺ is reduced to FADH₂. In a coupled reaction GTP is converted to GDP with the simultaneous synthesis of ATP from ADP.

The leaves of C₄ plants have a characteristic anatomy consisting of concentric bundle sheath and mesophyll cell layers around the vascular bundles. These two distinct cell layers possess chloroplasts which have either structural or size dimorphism.

Living gymnosperms are predom inantly middle sized trees (Cycas) to tall trees (Pinus) and shrubs (Ephedri Rarely they are woody climbers (Gnetum montanum). Their are no herbs in gymnosperms.

The process of taking in CO₂ by plants and releasing O₂ is occurs in photosynthesis. Photosynthesis is the process by which green plants prepare their own food from CO2 and water using the energy from the sunlight. Glucose is formed in this process which acts as food for the plants. Reaction of photosynthesis is:

6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂

CO₂ is reduced in carbohydrates or sugars. Hence it is more essential as a raw material for food formation.

Due to a reduction in photosynthesis, this may trigger the abscission of leaves (separation of leaves) and this abscission layer is produced when auxin content falls below a minimum causing leaf or other plant part to fall off.

International Union for Conservation of Nature (IUCN) is working in the field of conservation of nature and sustainable use of natural resources.

• The single stranded flagella occurs in prokaryotes e.g. Bacteria etc.
• They contain only single stranded and not contain 9 + 2 system.

ICBN stands for International Code for Botanical Nomenclature that frames rules for the nomenclature of plants applicable all over the world.

Hence, the Correct Answer is A

NCERT Reference: Topic “Diversity in the living world” from Chapter  "The Living world"  of NCERT

Correct option is D. A-Seed coat, B-Endosperm, C-Cotyledon, D-Hypocotyl

• It’s the nucellus. Nucellus is the place where the embryo sac rests.
• It is made up of cushiony cells called parenchymatous cells.
• Nucellus helps in the nourishment of the embryo sac.

• Protista is a group of eukaryotic organisms, which means they possess a true nucleus surrounded by a nuclear membrane.
• The nucleus houses the genetic material of the cell, including the DNA. Protists have a well-defined nucleus that separates the genetic material from the rest of the cellular components.
• On the other hand, Monera comprises prokaryotic organisms, including bacteria and cyanobacteria. Prokaryotes lack a nuclear membrane, and their genetic material is not enclosed within a separate nucleus.
• Instead, the DNA in prokaryotes is present in a region called the nucleoid, which is not separated by a nuclear membrane.
• Therefore, the presence of a nuclear membrane is a significant distinction between Protista (eukaryotes) and Monera (prokaryotes) within the five-kingdom classification system.

The factors which is responsible for wide variety of habitats within each biome includes local and regional variations of temperature, soil type, water availability etc.

In bacteria, the cytoplasm of outer membrane forms much coiled invaginations called mesosomes that participates in aerobic respiration.

• Stigma - It is the head of the pistil.
  • It receives pollen, which begins the process of fertilization.
• Style - It the stalk of the pistil.
  • It is a long, slender stalk that connects the stigma and the ovary. 
  • When pollen reaches the stigma, it begins to grow a tube through the style called a pollen tube, which eventually reaches the ovary.
• Ovary - It is the base of the pistil.
  • It holds the ovules for fertilization.
• Thalamus - It is present near the stalk of the flower.
  • It supplies nutrients to the flower.
  • It is a condensed axis of the flower from which all floral parts arise.

Parthenocarpy (parthenos-virgin, karpos-fruit) is the formation of seedless fruits without fertilization. The fruits developed from unfertilized ovaries are called parthenocarpic fruits.

Fig: Parthenocarpic Fruits

Other options are incorrect because:

• In asexual reproduction, a single individual (parent) is capable of producing offspring.
• For apomixis and sexual reproduction. 

There are different languages and so different regional names for an organism. Therefore, scientists came up with the idea of binomial nomenclature. Binomial nomenclature is introduced to standardize the name of a living organism.

Aristotle contributed to the classification of living organisms by using simple morphological characters to categorize plants into trees, shrubs, and herbs. He also divided animals based on whether they had red blood or not. This was an early attempt at a more scientific basis for classification, although it wasn't as comprehensive as later systems.

• Viruses can’t perform any of the metabolic activities when outside a living host. So, they are non-living organisms.
• Viruses don’t even consist of a cell and so acellular.
• They are in fact smaller than that of a bacterium and can even infect them.

Electron gain enthalpy becomes more negative across a period while it becomes less negative in a group.
However, electron gain enthalpy of O or F is less than that of the succeeding element. When electron is added to n = 2, the repulsion is more than when it is added to n = 3 in case of Cl or S.

The correct option is C.
Acetic acid that is Carboxylic acids gives effervescence with NaHCO₃ solution.

Alkenes contain C-C double bond whereas alkynes contain C-C triple bond.

ZnO(s) + CO(s) → Zn(s) + CO₂(g)

• Since oxygen has combined with carbon, carbon is the one that is oxidized and ZnO is the oxidizing agent. Similarly carbon has taken the oxygen of ZnO, carbon is the reducing agent and ZnO is the one that has been reduced.
• Reducing agent-C
• Oxidizing agent-ZnO
• Oxidized-CO
• Reduced- ZnO

So Option C is correct

The outer shell of any atom is called the valence shell. When the valence electron in any atom gains sufficient energy from some outside force, it can break away from the parent atom and become what is called a free electron.

Mentions sugar (sucrose), salt (sodium chloride), and diamond as examples of materials with crystalline structures. Diamond has a well-defined internal arrangement of atoms, making it a crystal. Graphite, on the other hand, is not mentioned in the examples provided.

The chemical formula of benzene is C6H6, so it has six carbon atoms and six hydrogen atoms.