Question Discussion & Solution

The correct answer is Only I.

Key Points

• In asexual reproduction, only one parent is involved and sex cells are not involved. 
• It is observed in both multicellular and unicellular organisms.
• Types of asexual reproduction are:
  • Binary Fission
  • Budding
  • Fragmentation
  • Vegetative Propagation
  • Sporogenesis
• Spore formation comes under sporogenesis. Hence, statement 1 is correct.
• Spore formation is a kind of reproduction process in plants by produces tiny spores and propagates through them.
• Spore Formation is a method of asexual reproduction. 
• Spore formation can be seen in the bread mould / Rhizopus.
• The airborne spores land on bread under favourable conditions and they germinate and produce new bread mould plants.
• Each spore is covered with a protective coat to withstand unfavourable conditions.
• Plants like ferns, mucor, and mosses are also reproduced through spore formation
• Spores are present in a sac called sporangia.
• Fragmentation is a type of asexual reproduction. Hence, statement 2 is incorrect.

Additional Information

• Pollination is a method of Sexual Reproduction.
• Self-pollination:
  • The transfer of pollen grains from another to the stigma of the same flower is called self-pollination.
• ​Cross-pollination:
  • The transfer of pollen grains from the anther of one flower to the stigma of another flower is called cross-pollination.
• Vegetative propagation:
  • It is a form of asexual reproduction of a plant wherein a new plant grows from a fragment of the parent plant.

Concept:

A functional dependency is a constraint between two sets of attributes from the database.

Explanation:

In general form, a functional dependency denoted by X -> Y between two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuples that can form a relation state r of R.

The constraint is that for any two tuples T₁ and T₂ in r that have T₁[X] = T₂[Y], they must also have T₁[Y]

= T₂[Y]. It means that values of Y component of a tuple in r depend on or are determined by the value of X component.

If a relation R contains attributes (X and Y). Then X -> Y is a functional dependency. It means X functionally determines Y in R if and only if two tuples agree on their X value, they must necessarily agree on their Y value.

The correct answer is Atomic Energy.

Key Points

• A biomass energy source is one that is derived from organic matter.
• The source of atomic energy is radioactive metals which are of non-organic nature and thus cannot be classified as a biomass energy source.

The correct answer is Bullets.

Key Points

• When data is in list format Bullets can be used to represent it neatly in MS Word.
• Microsoft products allow you to organize content using bulleted and numbered lists.
  • You can also create customized lists by editing the bullet/number font, color, alignment, and icon style. 
• Within your Microsoft document, place your cursor or highlight the text where you wish to insert a bulleted list. 
• Under the [Home] tab in the “Paragraph” section, click the [Bullets] drop-down menu. 
• Choose a bullet style or select "Bullets and Numbering” to create a customized bullet style.
• To change the alignment of the bulleted list, from the "Paragraph" section, click the [Aligh Text] drop-down menu.
• 

Additional Information

• Change Case
  • You can also capitalize a character you are typing by pressing and holding the SHIFT key while you type.
  • You can also press the CAPS LOCK to have every letter that you type capitalized, and then press the CAPS LOCK again to turn off capitalization.
  • 
• Spacing between Lines
  • Following are the simple steps to adjust the spacing between two lines of the document.
  • Step 1
    • Select the paragraph or paragraphs for which you want to define the spacing.
    • You can use any of the text selection methods to select the paragraph(s).
  • Step 2
    • Click the Line and Paragraph Spacing Button triangle to display a list of options to adjust the space between the lines.
    • You can select any of the options available by simply clicking over them.
  • 

The correct answer is Bone.

• Bone:
  • Bone is living, growing tissue. It is made mostly of collagen, a protein that provides a soft framework, and calcium phosphate, a mineral that adds strength and hardens the framework.
  • Osteoporosis, or porous bone, is a disease characterized by low bone mass and structural deterioration of bone tissue, leading to bone fragility and an increased risk of bone fractures.

Additional Information

• Heart:
  • A large proportion of cardiovascular disease is due to atherosclerosis.
  • In atherosclerosis, the walls of your arteries become thick and stiff because of the build up of fatty deposits called plaques. 
• Glomerulonephritis is a group of diseases that injure the part of the kidney that filters blood.
• Asthma, Chronic obstructive pulmonary disease (COPD), Pneumonia are common lung diseases.