Which processes are involved in nutrient cycling in a functioning ecosystem?
- A. Erosion, weathering, and sedimentation
- B. Decomposition, evaporation, and precipitation
- C. Nitrogen fixation, denitrification, and ammonification
- D. Respiration, photosynthesis, and transpiration
Which type of reproduction involves the fusion of gametes from two parents?
- A. Sexual reproduction
- B. Asexual reproduction
- C. Binary fission
- D. Budding
Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains?
- A. Yellow soil
- B. Laterite soil
- C. Red soils
- D. Black soil
Which of the following functions is performed by the skin to help maintain homeostasis in the human body?
- A. Regulation of body temperature
- B. Filtration of blood
- C. Production of hormones
- D. Digestion of food
Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize?
- A. Denitrification
- B. Nitrogen fixation
- C. Ammonification
- D. Nitrification
The natural place of an organism or community is known as
- A. Niche
- B. Habit
- C. Biome
- D. Habitat
Behavioral adaptation for dealing with a hot climate could include
- A. Hibernating during the hottest part of the day
- B. Large scales on the back of a lizard
- C. Feeding during the hottest part of the day
- D. A small kidney to conserve water
Which of the following processes is involved in the reproduction of developing organisms?
- A. Budding
- B. Germination
- C. Fertilization
- D. Pollination
Which of the following is an example of an abiotic ecological factor?
- A. Temperature
- B. Competition
- C. Predation
- D. Symbiosis
What is the tissue responsible for transporting water and minerals from the roots to the rest of the plant?
- A. Xylem
- B. Epidermis
- C. Parenchyma
- D. Phloem
In monohybrid inheritance, if an organism carries two different alleles for a particular gene, it is called:
- A. Homozygous
- B. Dominant
- C. Heterozygous
- D. Recessive
Most fishes do not sink in water because of the presences of:
I. swim bladder
II. air bladder
III. air sacs
IV. air in spongy bones
- A. II and III are correct
- B. I and II are correct
- C. I, II, III and IV are correct
- D. III and IV are correct
Which gland is responsible for producing the hormone insulin?
- A. Thyroid gland
- B. Pituitary gland
- C. Pancreas
- D. Adrenal gland
Which of the following is the primary organ involved in gas exchange during respiration in humans?
- A. Diaphragm
- B. Bronchi
- C. Lungs
- D. Trachea
The term cell was given by
- A. Robert Hooke
- B. Schwann
- C. De Bary
- D. Tatum
Which of the following represents an example of ecological management and conservation through a biological association?
- A. Construction of a dam for hydroelectric power
- B. Introduction of an invasive species for pest control
- C. Clear-cutting of a forest for timber extraction
- D. Establishment of marine protected areas
Which of the following are components of the skeletal system in humans?
- A. Cartilage and blood vessels
- B. Ligaments and tendons
- C. Muscles and nerves
- D. Bones and joints
Which of the following is an example of physiological variation in organisms?
- A. Variation in blood pressure among individuals
- B. Variation in beak shape among finches
- C. Differences in fur color in rabbits
- D. Variation in leaf shape in plants
A biome characterized by hot summer, warm winter and treeless vegetation is
- A. Steppe grasslands
- B. Temperate deserts
- C. Savannah grassland
- D. Tropical deserts
Which of the following is a characteristic feature of Kingdom Plantae?
- A. Presence of chloroplasts
- B. Ability to perform photosynthesis
- C. Lack of cell walls
- D. Heterotrophic mode of nutrition
Which of the following is an evolutionary trend commonly observed in organisms?
- A. Decreased complexity over time
- B. Increased dependence on external resources
- C. Increased genetic diversity within populations
- D. Decreased adaptation to the environment