Selected MCQ

Current Question
Which ecological interaction benefits both species?
  • A. Parasitism
  • B. Commensalism
  • C. Mutualism
  • D. Competition
Correct Answer: C
Explanation:
Mutualism benefits both organisms.
Related Question 1
Which ecological pyramid is always upright?
  • A. Energy
  • B. Biomass
  • C. Number
  • D. Population
Correct Answer: A
Explanation:
Energy decreases at each trophic level.
Related Question 2
Which species is isoelectronic with Ne?
  • A. Na⁺
  • B. Mg²⁺
  • C. F⁻
  • D. All of the above
Correct Answer: D
Explanation:
All have 10 electrons like neon.
Related Question 3
Which organism eats both plants and animals?
  • A. Herbivore
  • B. Carnivore
  • C. Omnivore
  • D. Producer
Correct Answer: C
Explanation:
Omnivores consume both.
Related Question 4
Which species has highest electronegativity?
  • A. Oxygen
  • B. Fluorine
  • C. Chlorine
  • D. Nitrogen
Correct Answer: B
Explanation:
Fluorine is most electronegative.
Related Question 5
Which interaction has shortest range?
  • A. Gravitational
  • B. Electromagnetic
  • C. Weak
  • D. Strong
Correct Answer: C
Explanation:
Weak force acts over very short distances.