Biological Classification Quiz

1Q) Classification of Arthropods

• Crustaceans: Mostly sea creatures, with multiple legs and antennae. Example: crabs
• Arachnids: Eight legs, two body sections, no antennae. Example: spiders
• Insects: Wings, six legs, three body sections, one pair of antennae. Example: ladybugs
• Myriapods: Many legs and body segments, one pair of antennae. Example: centipedes

2Q) Main Features of Different Biological Groups

• All Animals: Multicellular, have a nucleus, no cell walls or chloroplasts. Obtain energy from organic substances.
• All Plants: Multicellular, have a nucleus, chloroplasts, and cell walls. Obtain energy through photosynthesis.
• All Fungi: Multicellular, have nuclei and cell walls (not cellulose). Feed through saprophytic nutrition.
• All Protoctists: Mostly unicellular, but some are multicellular, have a nucleus. Some have a cell wall and chloroplasts, some feed via photosynthesis or organic substances.
• All Prokaryotes: Often unicellular, have cytoplasm and a cell wall but no nucleus or mitochondria.

3Q) The Respiratory System

• Respiration begins with inhaling oxygen.
• Oxygen passes through the mouth or nose, into the larynx and pharynx, then trachea.
• The trachea branches into bronchi, then bronchioles.
• Oxygen reaches the alveoli, where it's absorbed.
• Carbon dioxide is exhaled through the same process, in reverse.

4Q) Human Influence on the Ecosystem: Advantages and Disadvantages

Advantages

• Monoculture: Increased efficiency, easier management, higher earning potential.
• Livestock Farming: Controlling environment, feed, and healthcare for higher meat/milk/egg production at a faster pace
• Selective Breeding: Higher crop yields, new organism varieties, disease resistance development.

Disadvantages

• Monoculture: Increased risk of disease or pest outbreaks, decreased soil quality.
• Livestock Farming: Wastes can pollute soil and water, faster spread of diseases.
• Selective Breeding: Reduced diversity within a species, some traits may be lost.