OSSSC TGT Science CBZ Mock Test - 4 - OTET MCQ

Learning disabilities may occur due to all of the following except cultural factors as they do not affect learning disability.

Divergent thinking is a thought process or method used to generate creative ideas by exploring many possible solutions.

Each pupil is different in terms of learning ability, academic standards, classroom learning and academic performance, and each has his own pace in learning. A successfully implemented remedial teaching strategy points the student towards the path which leads to goals and objectives of teaching. Hence, it is considered as a sign of motivated teaching.

Cognition is what we are thinking, what is going on in our minds. Cognition is what is coming to know more, or what we are trying to remember that we already knew.
Hence, the correct answer is "Coming to know".

Learning is a process where we live, talk with others, learn new things which means we are interacting with others, and learning different skills like sitting, walking, eating, etc. We gain knowledge of what we are not aware of and also learn various skills that help us in the future.
Hence, the correct answer is "All of the above".

Site-specific inhibitors of electron transport prevent the passage of electrons by binding to a component of the chain, blocking the Oxidation/reduction reaction.

Antimycin A, an antibiotic, blocks electron transport at the level of the CoQH₂​-cytochrome c-reductase (Complex III). Cyanide, azide, and Co bind with cytochrome oxidase complex and inhibit the terminal transfer of electrons to oxygen.

• Numerical classification is based on mathematical calculations based on observable characteristics.
• In this mode of classification, each character is given a number or a code.
• The more the number of similar characters, the more is the chance that they belong to similar taxon.
• The main disadvantage of numerical taxonomy comes with the variation in result with variation in set of characteristics.

Melvin Calvin was the professor of chemistry. He was awarded the nobel prize for chemistry for the discovery of various pathways of photosynthesis. 3-phosphoglyceric acid as first CO₂ fixation product in algal photosynthesis was discovered by Calvin. He used radioactive 14C in algal photosynthetic studies. This led to the discovery that the first CO₂ fixation product was a three-carbon organic acid. He also helped to mark out the complete biosynthetic pathway, hence it is named as Calvin Cycle. The first stable product identified was 3-phosphoglyceric acid (PGA), hence it is named as C₃ pathway. Calvin cycle occurs in all photosynthetic plants whether they have C₃ or C₄ pathway.

Artificial classification is based on morphological structures of the plant i.e. artificial classification focuses on external structure of the plants than their internal structure.
Hence the correct option is "A"

Photorespiration is a biochemical process in plants in which, especially under conditions of water stress, oxygen inhibits the Calvin cycle, the carbon fixation portion of photosynthesis. The three organelles participates in photorespiration are chloroplast, mitochondria and peroxisomes. Thus, option A is correct.
Organelles such as vacuoles, Golgi bodies, rough endoplasmic reticulum and dictyosomes does not involve in photorespiration. Thus, other options are wrong.

The meristem which is consumed in the formation of an organ is called determinate meristem. The meristem which continues its activity throughout life of the plant is called indeterminate meristem. Root apical meristem, shoot apical meristem, intercalary meristem (e.g., grass) and lateral meristems are all Indeterminate meristems. Plant growth is generally indeterminate, i.e., plants retain the capacity for unlimited growth throughout their life, whereas it is determinate in the meristem which is consumed in the formation of an organ.

Gymnosperms are characterized by seeds that are not enclosed by any ovary wall and remain exposed both before and after fertilization. This is in contrast to angiosperms where seeds are enclosed within a fruit.

The presence of the bundle sheath would help you identify the C4 plants. This pathway that has been named the Hatch and Slack Pathway, is again a cyclic process.

Photophosphorylation is the process in which ATP is produced, which is called as energy currency of the cell. During this process, ADP is phosphorylated to give ATP in presence of light energy.
So, the correct answer is option B.

The electron transport chain along with oxidative phosphorylation involves the synthesis of energy-rich ATP molecules with the help of energy released during the oxidation of reduced coenzymes (NADH₂ and FADH₂) formed during glycolysis and the Krebs cycle. A total of 10 NADH₂ and 2 FADH₂ molecules are produced during aerobic respiration. They help in the formation of 32 ATP molecules.

• In the hierarchical system of classification of plants, the taxonomic rank that typically ends in "aceae" is the family. 
• A family is a higher rank in the classification system, grouping together related genera. 
• The family name is often derived from the name of a prominent genus within that family. For example, the family Rosaceae includes the genera Rosa (roses), Malus (apples), and Prunus (cherries, plums, etc.). 
• Similarly, the family Poaceae includes the grasses, and the family Fabaceae includes legumes.

Hence, the Correct Answer is C
NCERT Reference: Topic- TAXONOMIC CATEGORIES from chapter "The Living world" of NCERT.

• The category "Genus" comprises a group of related species with more common characteristics than species of other genera.
• It is one level above species in the hierarchy.

• RH Whittaker (1969) proposed a Five Kingdom Classification. The kingdoms defined by him were named Monera, Protista, Fungi, Plantae and Animalia.
• The main criteria for classification used by him include cell structure, thallus organisation, mode of nutrition, reproduction and phylogenetic relationships.
• All the prokaryotic organisms were grouped together under kingdom Monera and unicellular eukaryotic organisms were placed in kingdom Protista.
• The fungi were placed in a separate kingdom, i.e. kingdom Fungi.
• The kingdoms Plantae and Animalia were commonly referred to as plant and animal kingdoms, respectively.

Egg yolk contains lampbrush chromosome where two homologous chromosomes with several chiasmata with several loop in chromatic region is found.

First-order consumers are animals that eat plants called herbivores. They are the first step in the food chain.

Taxon tiger represents the taxonomic category species. The tiger (Panthera Tigris) is the largest cat species, most recognizable for its pattern of dark vertical stripes on reddish-orange fur with a lighter underside.

Nuclear mass does not affect the valence shell because nucleus consists of protons and neutrons. Whereas proton, i.e. nuclear charge affects the valence shell but neutrons do not. Thus, option (c) is wrong.

An atom can be defined as the smallest particle of an element, which can take part in chemical change or reaction and still retain the identity of the element. Notice that the atom is not the smallest particle of an element, as there are electrons, protons and neutrons which are smaller, but, it is the smallest which can be involved in chemical change and still retain the chemical properties of the element.

Hennig Brand was an alchemist looking for the philosopher's stone when he discovered phosphorus. Robert Boyle discovered it independently in 1860. Lavoisier separated metals and non-metals. Jons Jakob Berzelius used letters to signify elements.

Correct option is D. 
Evaporation is the process of a liquid turning into vapor at any temperature below its boiling point. During evaporation, particles escape from the surface of the liquid to form gas. Evaporation is different from boiling because it only occurs at the surface of the liquid and is very slow. 

Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles. Since the impacts of the molecules of the dispersion medium on the colloidal particles are unequal (i.e. unbalanced bombardment), the result is zig-zag motion.

The correct option is C.
Zero on the Celsius scale (0°C) is the equivalent to 273.15K. 1-degree rise in Celsius scale is equivalent to the 1-degree rise in the Kelvin scale.
 Conversion Formula for the temperature is:C=K−273
300-273= 27 C

Water can undergo a change in state upon heating and cooling. On heating above 100⁰C water change into gaseous state and on cooling below 0⁰C it changes into solid state.

Animal cells do not have cell Wall because they do not need them. Cell walls , which are found in plant cells , maintain cell shape, almost as if each cell has its own exoskeleton.