1. Air contains major quantity of _____?
<p>Air contains a major quantity of <strong>nitroge</strong>n, which makes up about 78% of the Earth's atmosphere.</p>
2. Dispersal of seeds and pollen of flowers of various plants are due to presence of ____?
<p>Dispersal of seeds and pollen of flowers in various plants occurs due to the presence of <strong>air</strong>, primarily through wind and other mechanisms.</p>
3. Atmosphere is essential for _____ on earth?
<p>The atmosphere is essential for<strong> life</strong> on Earth, providing necessary gases and regulating climate conditions.</p>
4. Landfill is defined as _____?
<p>A landfill is defined as <strong>a low-lying open area designated for the disposal of waste. It is designed to manage waste through containment and minimize environmental impact over tim</strong>e.</p>
5. The rotting and conversion of some materials into manure is known as ?
<p>The rotting and conversion of organic materials into manure is known as <strong>composting</strong>. This process involves decomposition, turning waste into nutrient-rich compost that enhances soil fertility and supports plant growth.</p>
6. ______ helps red worm to grind food?
<p>The <strong>gizzard</strong> in red worms aids in grinding food. This muscular structure functions like teeth, breaking down organic matter, facilitating digestion, and enabling the worms to efficiently process their food.</p>
7. The body of living organisms are made up of tiny units called?
<p>The body of living organisms is composed of tiny units known as <strong>cells</strong>. These basic structural and functional units perform essential functions, supporting growth, metabolism, and overall biological processes within organisms.</p>
8. The nucleus in membrane is surrounded by a jelly like substance called ?
<p>The nucleus in a cell is surrounded by <strong>cytoplasm</strong>, a jelly-like substance that fills the cell. Cytoplasm contains various organelles and is essential for cellular processes and metabolism.</p>
9. The pores present on leaves that take carbon dioxide are called ____?
<p>The pores on leaves that facilitate the intake of carbon dioxide are called <strong>stomata</strong>. These tiny openings also allow for gas exchange and play a crucial role in photosynthesis.</p>
10. ______ is the ultimate source for all living organisms?
<p>Sun is indeed the ultimate source of energy, the option "All of the above" can also be considered correct because:</p>
<ul>
<li><strong>Plants</strong>: They convert solar energy into chemical energy through photosynthesis, serving as a primary food source.</li>
<li><strong>Earth</strong>: It provides the habitat and necessary conditions for life.</li>
</ul>
<p>So, if "All of the above" is an option, it acknowledges the interdependence of the Sun, plants, and Earth in supporting life.</p>
11. Cuscuta plant does not have?
<p>Cuscuta, commonly known as dodder, is a parasitic plant that lacks c<strong>hlorophyll</strong> and does not perform photosynthesis. It has thin, yellowish-orange stems that wrap around host plants, deriving nutrients and water. Its leaves are reduced to minute scales, allowing it to depend entirely on its host for survival.</p>
12. Cuscata is generally a ___?
<p>Cuscuta, commonly known as dodder, is generally a <strong>parasite</strong>. It attaches to host plants, deriving nutrients and water while lacking chlorophyll, which prevents it from photosynthesizing independently.</p>
13. Cotton like things present on a bread fluffy patches called ?
<p>The cotton-like patches found on bread are caused by<strong> fungi</strong>, specifically molds. These molds grow in fluffy colonies, feeding on the organic material and indicating spoilage in the bread.</p>
14. The organisms which depend on dead and decay matter for food are called as ___?
<p>Organisms that depend on dead and decaying matter for food are called <strong>saprotrophs</strong>. They play a crucial role in decomposition, recycling nutrients back into the ecosystem for other organisms.</p>
15. The process of taking food into the body is called ?
<p>The process of taking food into the body is known as <strong>ingestion</strong>. This essential step allows organisms to obtain nutrients needed for energy, growth, and overall bodily functions and maintenance.</p>
16. The acids gradually damage the teeth, this process is referred as ______?
<p>Tooth decay refers specifically to the process of acids eroding tooth enamel, leading to cavities. Tooth destruction describes the broader impact of decay on dental health, indicating severe damage or loss.</p>
17. Alimentary canal is referred as _____?
<p>The alimentary canal is referred to as the <strong>digestive tract</strong>, encompassing the entire pathway through which food passes, from ingestion to excretion.</p>
18. Oesophagus is generally known as ____?
<p>The oesophagus, known as the <strong>food pipe or gullet,</strong> is a <strong>muscular tube</strong> in the digestive system. It transports food and liquid from the mouth to the stomach, prevents aspiration into the windpipe, and stops liquids from entering the nasal cavity, ensuring efficient digestion and safe swallowing.</p>
19. The break down of complex components of food into simpler substances is called?
<p>The breakdown of complex food components into simpler substances is called <strong>digestion</strong>. This process involves mechanical and chemical actions that facilitate nutrient absorption in the body for energy and growth.</p>
20. Chlorophyll containing partner is present in ____ of the following?
<p><strong>Lichens</strong> consist of a symbiotic relationship between fungi and chlorophyll-containing partners, usually algae or cyanobacteria, allowing them to perform photosynthesis.</p>
21. Some organisms live together and share shelter and nutrients,this process is known as _____?
<p>A <strong>symbiotic relationshi</strong>p refers to the close interaction between organisms of different species, where they share shelter and nutrients for mutual benefit.</p>
22. The mode of nutrition in which organisms take nutrients from dead and decaying matter?
<p>In <strong>saprotrophic nutrition</strong>, organisms obtain nutrients by decomposing dead and decaying matter, playing a crucial role in nutrient cycling in ecosystems.</p>
23. The plant on which cuscuta plant depends and grows on is called ?
<p>Cuscuta, a parasitic plant, relies on another plant for nutrients and support, which is known as the <strong>hos</strong>t. The host provides essential resources, allowing Cuscuta to thrive and grow.</p>
24. Cuscuta is also known as ____?
<p><strong>Cuscut</strong>a is commonly known as <strong>Amarbell</strong>, which reflects its parasitic nature and dependence on other plants for nutrients.</p>
25. Sometimes plants depend on other plant food this nutrition is called as?
<p>When plants depend on other plants for food, this type of nutrition is referred to as <strong>heterotrophic mode</strong>, as they cannot produce their own food.</p>
26. Slimy green patches found in ponds or other stagnant water bodies are due to ____?
<p>Slimy green patches in ponds or stagnant water bodies are primarily caused by <strong>algae</strong>, which thrive in such environments.</p>
27. The starch is one among the ______?
<p><strong>Starch</strong> is classified as a <strong>carbohydrate</strong>, a macronutrient essential for energy. It is found in foods like potatoes, rice, and grains, providing fuel for the body's metabolic processes.</p>
28. The presence of starch in leaf indicates the occurrence of ______?
<p>The presence of starch in a leaf indicates the occurrence of <strong>photosynthesis</strong>, as starch is a product of the process where plants convert sunlight into energy.</p>
29. The leaves of a plant has green pigment called ?
<p><strong>Chlorophyll </strong>is the green pigment found in the leaves of plants, essential for photosynthesis as it captures sunlight.</p>
30. Centrally located spherical structure in a cell membrane is known as ?
<p>The <strong>nucleus</strong> is the centrally located spherical structure within a cell membrane, containing the cell's genetic material.</p>
31. _______ is the mode of taking food by an organism for utilization of body?
<p><strong>Nutrition</strong> refers to the process by which organisms obtain and utilize food to support growth, energy, and overall health. It encompasses ingestion, digestion, absorption, and metabolism of nutrients.</p>
32. Plastics are hard to _____?
<p>Plastics are challenging to recycle because they are designed for durability, making degradation difficult. Additionally, the variety of plastic types complicates the recycling process, leading to environmental concerns.</p>
33. The method of preparing compost with the help of red worms is called ?
<p><strong>Vermi composting</strong> is a process that utilizes red worms to break down organic waste, transforming it into nutrient-rich compost. This method enhances soil health and promotes sustainable waste management practices.</p>
34. The rot garbage will provide ______ to plants?
<p>Rotting garbage, or organic waste, provides essential nutrients to plants as it decomposes, enriching the soil.</p>
35. Burning of leaves produces?
<p>Burning leaves produces smoke, carbon dioxide, and various harmful gases, contributing to air pollution.</p>
36. Plants and animals depends on each other by exchange of oxygen with _____?
<p>Plants take in carbon dioxide for photosynthesis, while animals exhale carbon dioxide as a waste product, creating a symbiotic relationship.</p>
37. Aquatic animals uses ____ form of air for respiration?
<p>Aquatic animals rely on <strong>dissolved air</strong> in water for respiration. They extract oxygen from this dissolved air, allowing them to survive and thrive in aquatic environments, unlike terrestrial animals.</p>
38. From the following options what is the true statement about Air?
<p>Air consists mainly of nitrogen, oxygen, carbon dioxide, and trace gases, making it a mixture rather than a pure substance or just a gas.</p>
39. Air contains _____?
<p>Air contains carbon dioxide, water vapor, nitrogen, oxygen, and other trace gases.</p>
40. Soil contains ______?
<p>Soil contains air, carbon, water, minerals, and organic matter, making it essential for plant growth and various biological processes.</p>
41. Plant and animal matter consumes oxygen on burning and produces ______?
<p>When plant and animal matter burn, they consume oxygen and produce carbon dioxide, along with other gases like water vapor and various pollutants depending on the material being burned.</p>
42. The windmill is used for ____?
<p>Windmills can be used to draw water from tube wells as well as to run flour mills, harnessing wind energy for various applications.</p>
43. Air helps in the movement of ____?
<p>Air plays a crucial role in the movement of gliders, sailing yachts, and parachutes by providing lift, propulsion, and drag, enabling them to navigate through the atmosphere effectively.</p>
44. Air in excess motion is referred as?
<p>Wind refers to air in motion, particularly when it moves in a significant and consistent manner, usually due to differences in atmospheric pressure.</p>
45. The envelope of air that surrounds the earth is known as?
<p>The envelope of air that surrounds the Earth is known as <strong>d) Atmosphere</strong>.</p>
<p>The atmosphere is composed of layers of gases that are held by gravity and play a vital role in supporting life by providing essential elements such as oxygen and carbon dioxide, as well as protecting the planet from harmful solar radiation.</p>
46. Teeth formed between the age of 6 to 8 are called as _____?
<p>These are the first set of teeth that children develop, also known as deciduous teeth, which eventually fall out and are replaced by permanent teeth later in life.</p>
47. The saliva breaks down the starch into ___?
<p>Saliva contains the enzyme amylase, which begins the process of starch digestion by breaking it down into simpler sugars.</p>
48. The presence of water vapour in air is important for following process?
<p>Water vapor is crucial for the water cycle, facilitating the continuous movement of water between the earth and atmosphere. It evaporates into the air, forms clouds, and eventually falls as precipitation. Additionally, water vapor contributes to the Earth's radiative balance, transports latent heat, and is essential for plant growth.</p>
49. Increase in carbon dioxide levels causes?
<p>Increased carbon dioxide levels can lead to severe health risks:</p>
<p><strong>Death:</strong> High concentrations of carbon dioxide can cause suffocation by displacing oxygen in the air, leading to unconsciousness and respiratory failure. Prolonged exposure may result in permanent brain damage or death.</p>
<p><strong>Loss of Oxygen:</strong> Elevated CO₂ levels reduce the amount of oxygen available for breathing, impairing the respiratory system and overall health. These factors make monitoring and managing carbon dioxide levels crucial for safety and well-being.</p>
50. Carbon dioxide makes small component of ___ around us?
<p>Carbon dioxide is a minor but essential component of the air around us, typically making up about 0.04% of the Earth's atmosphere. It plays a critical role in processes like photosynthesis and the greenhouse effect.</p>