The plant response to touch, such as the closing of Mimosa pudica leaves, 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:
Vaccination introduces antigens (weakened or killed pathogens) to stimulate the body's own immune system to produce antibodies and memory cells without causing disease. This is artificial active immunity. Natural active immunity is acquired by recovering from infection. Artificial passive immunity is direct administration of antibodies (e.g., antiserum). Natural passive immunity is transfer of maternal antibodies to fetus.

Explanation:
Mendel's Law of Segregation states that allele pairs separate during gamete formation, applying to a single gene. His Law of Independent Assortment applies to genes located on different (non-homologous) chromosomes, not those linked on the same chromosome. Mendel conducted his pioneering genetic experiments on the garden pea, Pisum sativum. Thus, statements 1 and 3 are correct.