OSSSC TGT Science CBZ Mock Test - 1 - OTET MCQ

Useful strategies for teaching students with mental retardation include the following:

• Teach one concept or activity component at a time
• Teach one step at a time to help support memorisation and sequencing
• Teach students in small groups, or one-on-one if possible
• Always provide multiple opportunities to practice skills in a number of different settings
• Use physical and verbal prompting to guide correct responses, and provide specific verbal praise to reinforce these responses

The term used interchangeably with 'Motivation' is 'Need'. 
Motivation is a term that means the motive behind something. It means a person wants something, has a desire for something, wants to avoid something, and wants to escape from something. Having a desire for something is related to need. When we need something, then only a desire creates to have that thing.
Thus, this is the correct answer.

Pressure from parents, Fear of failure, and Competition with peers affects negatively. Only meaningful association is a factor that affects positively. Meaningful associations can be an association between teacher and student, As teachers may influence their student's learning. Forming an association with any such person to whom the students get knowledge and motivation whether it is peer association, Teacher-students association, etc.
Hence, the correct answer is, 'Meaningful association.'

TCA or Krebs' cycle is amphibolic (both catabolic and anabolic) because it provides a number of intermediates for anabolic pathways.

Photosynthesis is a redox reaction in which carbon dioxide is reduced to sugars in dark reaction and water is oxidised to release oxygen in light reaction of photosynthesis. C¹⁴ label was used to trace the path of carbon in the dark reaction in C³ plants by Calvin, Benson and Basham. The O¹⁸ label was used by Rumen and Kamen to experimentally prove that the source of oxygen released during light reaction of photosynthesis is water.

The plant hormone auxin is used for agriculture and horticulture.

• During the process of plant propagation, auxin is used to initiate rooting in stem cutting.
• Auxin performs the role of promoting flowering in the plant.
• Abscission of older mature fruits and leaves is regulated by the hormone auxin.
• It also prevents leaves and fruits from dropping at the early stage. The growing apical buds in most higher plants inhibit the growth of auxiliary buds. This phenomenon is called apical dominance.

Therefore, the correct answer is option D.

• The measurement and comparison of total growth per unit time are called an absolute growth rate.
• The growth of the given system per unit time expressed on a common basis is called a relative growth rate.

Unlike bryophytes and pteridophytes, in gymnosperms the male and the female gametophytes do not have an independent free-living existence.

Photosynthesis is the process in which autotrophs such as green plants use carbon dioxide and water in presence of sunlight to synthesize nutrients such carbohydrates in the form of glucose and release oxygen. In this carbon dioxide is reduced to glucose and water is oxidized to release oxygen.

Photosynthesis occurs in two stages, light reaction, and dark reaction. During the light reaction reduced NADPH2 and ATP are synthesized. These products are used subsequently to reduce carbon dioxide into sugars. The purpose of ATP in photosynthesis is to transfer energy from light reaction to dark reaction. The purpose of NADP is to transfer hydrogen from light reaction to dark reaction in the form of reduced NADPH_2.

Nicotinamide adenine dinucleotide phosphate, abbreviated NADP⁺ or, in older notation, TPN, is a cofactor used in anabolic reactions, such as lipid and nucleic acid synthesis, which require NADPH as a reducing agent. It is the coenzyme - II

The International Day for Biological Diversity is a United Nations–sanctioned international day for the promotion of biodiversity issues. It is held on May 22. The International Day for Biological Diversity falls within the scope of the UN Post-2015 Development Agenda's Sustainable Development Goals.

The transfer of pollen grain from anther to stigma is called pollination. Pollination is caused by winds, insects, water, and some other means. Insect pollinated flowers are called Entomophilous flowers.

Maize flower is pollinated by winds. The transfer of pollen grain from anther to stigma by wind is known as anemophilus.

The nucleolar chromatin contains the gene for rRNA and ribonucleoprotein. The nucleolus is the largest structure present in the nucleus of eukaryotic cells where it primarily serves as the site of ribosome synthesis and assembly. Nucleoli also have other important functions like the assembly of signal recognition particles and playing a role in the cell's response to stress. Nucleoli are made of proteins and RNA and form around specific chromosomal regions.

Valleys, shade sides of mountains and western ghats have more trees and water resources where more diverse fauna and flora may be present due to the availability of their life-sustaining resources compared with the others. Foothills, when compared with the mountain peak, are more diverse because mountain peaks are at higher altitude there is more sunlight, less water or we can say no water and also colder climate when compared to foothills so it will mostly be covered with either snow or there will exist a grassland.

• Both the statements are correct.
• Taxonomy involves classification of organisms and Characterisation, identification, classification and nomenclature are parts of the same.

Replication of DNA along with the synthesis of nuclear proteins such as the histones occur during S phase of interphase.

The middle layer of uterus is thick and muscular structure called myometrium that help in exhibiting strong contraction during delivery of the baby.

• Pollen grains represent the highly reduced haploid male gametophyte generation in flowering plants, consisting of just two or three cells when released from the anthers. Their role is to deliver twin sperm cells to the embryo sac to undergo fusion with the egg and central cell.
•  The female gametophyte of flowering plants, which produces the two female gametes – the egg cell and central cell – for double-fertilization by the two sperm cells of the male gametophyte

The algal cell wall contains cellulose, galactans, mannans and minerals like calcium carbonate. The plant cell wall contains cellulose, hemicellulose, pectins and proteins. Hence, cellulose is the common component.

The phrase “sharing of food” or “sharing of the table” describes commensalism. It is a long-term relationship between two species in which one species derives the benefit while other is neither harmed nor benefited.

Metallic oxides are basic in nature,

Copper sulphate aqueous solution is blue in colour .

So Option D is correct

A pH value of 7 indicates that the solution is neutral. The pH scale is a measure of the concentration of H⁺ ions in a solution. A pH of 7 signifies a neutral solution, where the concentration of H⁺ ions is balanced.

When HCl is added to iron filling then chlorine of HCl reacts with iron by evolving hydrogen gas. The iron dissolves, releasing hydrogen and making an iron chloride solution.

Fe + 2HCl → FeCl₂ + H₂ or

2Fe + 6HCl → 2FeCl₃ + 3H₂

-FeCl₂ is a greenish solution.

Moving from right to left the periodic table metallic character increases and if metallic character increase atomic size will also increase as a result atomic radii increase.

CH₄(g)+2O₂(g)→CO₂(g)+2H₂O(g)+ Heat + Light

Alkaline potassium permanganate is a good oxidising agent.