Which of the following statements about biotechnology is correct? MCQ with Answer and Explanation

Explanation:
The radicle is the embryonic root, emerging first during germination, and develops into the primary root system. The plumule develops into the shoot, hypocotyl is below cotyledons, epicotyl above cotyledons. The radicle grows downward (positively geotropic) to anchor and absorb water.

Explanation:
Theophrastus (c. 371–287 BCE), a student of Aristotle, is called the Father of Botany for his works 'Historia Plantarum' and 'De Causis Plantarum', in which he classified and described hundreds of plants. Aristotle is the Father of Zoology. Linnaeus developed binomial nomenclature. Darwin proposed natural selection. Theophrastus laid the early foundations of plant science.

Explanation:
The cell membrane (plasma membrane) is primarily composed of a phospholipid bilayer with embedded proteins, following the fluid mosaic model. The cytoskeleton is a network of protein filaments (microtubules, microfilaments, intermediate filaments) that provides structural support, shape, and facilitates intracellular transport. Ribosomes are the site of protein synthesis, not lipid synthesis (which occurs in the smooth ER). Thus, statements 1 and 3 are correct.