Cellular organization separates all life forms into prokaryotes or eukaryotes and unicellular or multicellular levels. In contrast, vascular tissues like xylem and phloem occur only within a small subgroup of plants. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, ...
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Observing a pigeon and an earthworm reveals distinctions in locomotion, appendages and body covering. Feathers and wings place pigeons in vertebrate birds, while moist skin and segmented bodies place earthworms in annelids. Chapter 12 Patterns in Life Diversity and Classification Solutions Class ...
The correct option is (iii) Presence of a cell membrane. Animal cells are eukaryotic, heterotrophic and characteristically bounded by a flexible cell membrane while completely lacking a rigid cellulose cell wall. CBSE Class 9 Science Chapter 12 Patterns in Life Diversity ...
The correct option is (ii) Body with jointed legs. Insects belong to phylum Arthropoda, uniquely characterized by jointed appendages, whereas annelids like earthworms completely lack jointed legs. Class 9 Science Chapter 12 Patterns in Life Diversity and Classification Solutions Chapter 12 Patterns ...
The claim is incorrect. Day 14 ovulation is an average estimate for a typical 28-day cycle; real cycle lengths, stress levels, hormonal fluctuations and health conditions vary significantly among individuals. Class 9 Science Chapter 11 Reproduction How Life Continues Solutions Chapter ...