Plant Biology and Classification

Carnivorous plants are plants that derive some or most of their nutrients from trapping and consuming animals, i.e. Utricularia, Dionea, Aldrovanda, Nepenthes, etc.

In higher plants thylakoids are organized into a granum-stroma membrane assembly, which leaves less space between thylakoids.

Nepenthes (pitcher plants) are insectivorous plants that trap and digest insects to supplement their nitrogen requirements. They are not parasites (which harm hosts), saprophytes (which feed on dead matter), or algae (which are photosynthetic protists).

A squamulose lichen is a lichen that is composed usually overlapping "scales" called squamules. If they appear raised from the substrate and appear leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "skin" (cortex), as foliose lichens do.

The epiblast in monocot embryos (like grasses) is a small structure near the embryonic shoot. It's considered a vestigial or rudimentary second cotyledon, which explains why monocots appear to have only one cotyledon (scutellum) while ancestrally having two.

Amyloplasts are specialized plastids that synthesize and store starch granules, which are used as an energy reserve in plant cells. They are particularly abundant in storage organs like potato tubers, cereal endosperm, and roots. The name 'amyloplast' comes from 'amylon' (starch). Water absorption is performed by vacuoles, light absorption by chlorophyll in chloroplasts, and fat storage by elaioplasts.

Modern taxonomy is based on evolutionary relationships, where species are defined as groups that share the most recent common ancestor and can interbreed. Species do NOT have only primitive characters (they have both primitive and derived traits). Scientific names have two parts (binomial nomenclature like Homo sapiens), not three parts. The fundamental principle of taxonomy is common descent.

This is the correct option as this is not a characteristic of the meristematic tissue. Cytoplasm is dense in it. Vacuoles are nearly absent.

Both PHYLIP (Phylogeny Inference Package) and PAUP (Phylogenetic Analysis Using Parsimony) are widely recognized classic software packages used for phylogenetic analysis. Therefore, both options 1 and 2 are correct.

 Ectophloic siphonostele is a type of stele with pith that has the phloem only on the outside of the xylem. It is found in Marsilea and Botrychiun.

 In amphitropous ovule, the embryo sac becomes horseshoe-shaped and the funiculus and micropyle are close to each other.

Spirogyra (pond silk) belongs to the division Chlorophyta. Spirogyra is a green algae.

Direct lateral conjugation is seen in S. jogensis.

Pectin forms the outer cell wall of Spirogyra.

Spirogyra is unbranched, i.e. it is a linear filament with no branching.