4. Compare the characteristics of
(a) Parenchyma, collenchyma and sclerenchyma.
(b) Skeletal muscles, smooth muscles and cardiac muscles
(c) Crop rotation, mixed cropping and intercropping.
(d) Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms.
(e) Kindoms- Monera, Protista, Fungi, Plantae, Animalia.
(f) Classes- Pisces, Amphibia, Reptilia, Aves, Mammalia.