The key difference between pteridophytes and phanerogams is that pteridophytes are seedless and flowerless vascular plants while phanerogams are seed and flower-bearing vascular plants. Kingdom Plantae has two sub-kingdoms as cryptogamae and Phanerogamae. Cryptogamae includes plants that reproduce through spores. Thus, those plants are seedless and flowerless plants. Furthermore, the sub-kingdom has three main groups […]

The key difference between insectivorous and symbiotic plants is that the insectivorous plants feed on insects through trapping and digesting them while symbiotic plants maintain a close relationship with another plant species which is mutually beneficial for both or either one of them. Plants possess different modes of nutrition. Furthermore, the type of nutrition varies […]

The key difference between protostele and siphonostele is that protostele is the most primitive type of stele that consists of a solid core of xylem without a central pith while siphonostele is a modification of protostele that consists of a cylindrical vascular system surrounding a central pith. The stele is the central portion of a […]

The key difference between sieve tubes and companion cells is that the sieve tubes are the phloem sieve elements that conduct food in angiosperms whereas, companion cells are the associated cells of sieve tubes. Moreover, sieve tubes have pores in the transverse walls while companion cells do not have pores. Phloem is one of the […]

The key difference between collenchyma and chlorenchyma is that collenchyma is a type of ground tissue that provides mechanical and structural support to a plant while chlorenchyma is a modified parenchyma tissue that contains chloroplasts and is photosynthetic. There are three types of ground tissue as parenchyma, collenchyma, and sclerenchyma. They are neither dermal nor […]

The key difference between protoxylem and metaxylem is that protoxylem is the first formed primary xylem which has smaller cells, especially narrow vessels and tracheids while metaxylem is the later formed primary xylem which has larger cells, especially wider vessels, and tracheids. Xylem is one of the two types of vascular tissues in plants. Xylem […]

The key difference between C4 and CAM plants is that in C4 plants, carbon fixation takes place in both mesophyll and bundle sheath cells while in CAM plants, carbon fixation takes place only in mesophyll cells. Most of the plants follow the Calvin cycle, which is the C3 photosynthesis pathway. These plants grow in regions […]

The key difference between sieve cells and sieve tubes is that the sieve cells are less specialized sieve elements that lack sieve plates and present in seedless vascular plants and gymnosperms while the sieve tubes are highly specialized sieve elements that have sieve plates and present in angiosperms. Vascular plants possess vascular bundles comprised mainly […]

番茄红素和β胡萝卜的关键区别ene is that the lycopene is a carotenoid that has no pro-vitamin A activity while the beta carotene is a carotenoid that is the main precursor for vitamin A. Carotenoids are a group of pigments that provide characteristic colours to fruits and vegetables, and therefore, visible in yellow, […]

The key difference between chlorophyll and carotenoids is that the chlorophyll is a family of green colour pigments primarily used for photosynthesis in photosynthetic organisms while the carotenoids are a group of yellow to red colour pigments including carotenes and xanthophylls that are accessory pigments. The pigment is a colourful chemical compound that reflects a […]