In eukaryotic cells,cellular respiration takes place in the

• A. nucleus
• B. cytoplasm
• C. centrioles
• D. mitochondrion

A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was

• A. the importance of micro elements to plants
• B. ascent of water through the xylem
• C. diffusion of colored substances
• D. distribution of food in plants

A density-dependent factor that regulates the population size of organism is

• A. Disease
• B. Sudden flood
• C. Drought
• D. Fire outbreak

A few drops of fehling’s solution was added to juice extracted from fresh maize grain and boiled. A red recipitate was formed, indicating the presence of

• A. alcohol
• B. protein
• C. non-reducing sugar
• D. starch

A new organism from Mars has been discovered, and its genome has n=12. Although these organisms are fluorescent green, their cells undergo meiosis and mitosis in the exact same way that human cells do. After one of these cells undergoes mitosis, how many chromosomes will it have?

• A. 12
• B. 4
• C. 24
• D. 18

Which of the following solutions is suitable for removing chlorophyll in a green leaf?

• A. Million
• B. Methylated spirit
• C. Benedict solution
• D. Fehling

A plant tissue that carries water and mineral salts is the

• A. cambium
• B. xylem
• C. cortex
• D. phloem

One of the following is a process of transmission of hereditary characteristics by chromosomes

• A. Genes relating to the same character occupy identical locations on the chromosomes
• B. Separation of homologous chromosomes into four daughter cells
• C. Separation of gametes during fertilization
• D. Dictating the formation of a protein by a gene in a chromosome

The hereditary material in a living organism is located inside the

• A. protein wall
• B. cytoplasm
• C. nucleus
• D. lysosome

The theory of natural selection was developed by

• A) Lamarck and Darwin
• B) Darwin and Wallace
• C) Wallace and Mendel
• D) Mendel and Lamarck