Which of the following organs is primarily responsible for excretion in humans?
- A. Liver
- B. Pancreas
- C. Kidneys
- D. Lungs
Metamorphosis is a biological process that involves
- A. The growth and development of an organism from a zygote to an adult
- B. The change in form and structure during the life cycle of certain organisms
- C. The regeneration of lost body parts in an organism
- D. The transformation of an organism from an adult stage to a larval stage
Which of the following mechanisms is responsible for providing support in plants?
- A. Muscles and bones
- B. Exoskeleton
- C. Endocrine system
- D. Cell walls and turgor pressure
Which of the following is a primary source of pollution in aquatic ecosystems?
- A. Soil erosion
- B. Industrial discharge
- C. Air pollution
- D. Deforestation
Which of the following is a plant hormone responsible for promoting cell elongation and growth?
- A. Abscisic acid
- B. Gibberellins
- C. Ethylene
- D. Cytokinins
Which of the following statements is true regarding sex-linked traits?
- A. Sex-linked traits are located on the sex chromosomes
- B. Sex-linked traits are inherited only from the mother
- C. Sex-linked traits are more commonly observed in females
- D. Sex-linked traits are not influenced by hormonal factors
Which of the following statements best describes the role of competition in the process of adaptation?
- A. Competition leads to the selection of individuals with favorable traits for survival and reproduction
- B. Competition ensures equal distribution of resources among individuals in a population
- C. Competition leads to the development of new traits and adaptations in a population
- D. Competition reduces the need for adaptations as individuals coexist peacefully
Which of the following describes the inheritance of traits from parents to offspring?
- A. Adaptation
- B. Evolution
- C. Natural selection
- D. Genetics
Which of the following is the most inclusive level of classification in the Linnaean system?
- A. Kingdom
- B. Phylum
- C. Domain
- D. Class
Viviparity refers to the reproductive strategy in which
- A. Offspring are produced by internal fertilization
- B. Offspring are produced by external fertilization
- C. Offspring develop and are nourished inside the female's body
- D. Offspring develop and are nourished outside the female's body
Which of the following statements is true about the kingdom Fungi?
- A. Fungi obtain nutrients by absorbing organic matter
- B. Fungi are photosynthetic organisms
- C. Fungi are multicellular organisms
- D. Fungi reproduce through the formation of seeds
Which of the following is NOT a method of reproduction in animals?
- A. Asexual reproduction
- B. Budding
- C. Sexual reproduction
- D. Sporulation
Which of the following factors primarily affects the distribution of organisms in an ecosystem
- A. Wind speed
- B. Soil pH
- C. Temperature
- D. Day length
Which of the following blood vessels carries oxygenated blood away from the heart?
- A. Arteries
- B. Venules
- C. Capillaries
- D. Veins
Which of the following represents the correct hierarchical organization of life from the smallest to the largest scale?
- A. Organs, tissues, cells, organisms, populations, communities, ecosystems
- B. Cells, organs, tissues, organisms, populations, communities, ecosystems
- C. Tissues, organs, cells, organisms, populations, communities, ecosystems
- D. Cells, tissues, organs, organisms, populations, communities, ecosystems
Which of the following is an example of conserving resources in an ecosystem
- A. Excessive use of chemical fertilizers in agriculture
- B. Introducing invasive species to an ecosystem
- C. Implementing sustainable fishing practices
- D. Cutting down trees for timber production
Which of the following characteristics is typical of the phylum Arthropoda?
- A. Radial symmetry
- B. Closed circulatory system
- C. Endoskeleton made of bones
- D. Presence of a segmented body
Which organs are part of the alimentary canal in the human digestive system?
- A. Salivary glands, tongue, and pharynx
- B. Large intestine, appendix, and rectum
- C. Stomach, liver, and gallbladder
- D. Oesophagus, pancreas, and small intestine
The alternate form of a gene is
- A. Alternate type
- B. Dominant character
- C. Recessive character
- D. Allele
What are the primary products of photosynthesis?
- A. Carbon dioxide and water
- B. Glucose and oxygen
- C. Glucose and carbon dioxide
- D. Oxygen and water
Which component of blood is responsible for carrying oxygen to the body tissues?
- A. Platelets
- B. White blood cells
- C. Red blood cells
- D. Plasma