In plants, growth is limited to certain regions, with some tissues continuously dividing throughout their life (meristematic tissue). Animals exhibit more uniform cell growth, with no specific demarcation between dividing and non-dividing regions.
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The pattern of growth differs between plants and animals due to the presence of meristematic tissues in plants. Plants exhibit indeterminate growth, continuously adding new cells throughout their lifespan, allowing for ongoing development. Meristems, located at tips of roots and shoots, contribute to this growth. In contrast, animals typically undergo determinate growth, ceasing to grow after reaching a genetically predetermined size. Animal growth is mainly observed during the juvenile phase. While animals may experience limited secondary growth, it is not as pronounced or sustained as in plants. The distinction in growth patterns reflects the diverse developmental strategies adapted by these two biological kingdoms.