The enzyme that cuts DNA at specific sequences is: MCQ with Answer and Explanation

Explanation:
Ernst Haeckel, a German zoologist, coined the term 'ecology' (Ökologie) in 1866, derived from Greek 'oikos' (house) and 'logos' (study), meaning the study of organisms in relation to their environment. Darwin contributed evolution, Mendel genetics, Hooke cell theory. Ecology encompasses interactions between organisms and their abiotic and biotic environment.

Explanation:
Root hairs, unicellular extensions of epidermal cells in the root maturation zone, greatly increase surface area for water and mineral absorption from the soil. Water enters by osmosis. Leaves absorb some water through stomata but primarily lose water. The stem transports, and flowers are reproductive.

Explanation:
Mature mammalian red blood cells (erythrocytes) lose their nucleus and other organelles during development to maximize space for hemoglobin. Thus they are anucleate. They cannot divide or repair themselves and have a lifespan of about 120 days. Neurons, leukocytes, and hepatocytes are nucleated. RBCs obtain energy through anaerobic glycolysis.