Difference between Corymb inflorescence and umbel inflorescence

1.  In case of corymb inflorescence peduncle is long and bears flowers at different levels. In case of umbel inflorescence peduncle is reduced to a point and all flowers arise from this point .

2. In corymb inflorescence flowers are present in a acropetal order whereas in umbel inflorescence flowers are present in centripetal order.
3. In corymb Inflorescence older flowers have longer pedicels whereas in umbel inflorescence there is no much difference in length of pedicels.
4. In corymb inflorescence involcure is absent whereas in umbel inflorescence involcure is mostly present.

By: Ashwani, biology teacher,Phagwara.

Difference between pedicel and peduncle.

Stalk of the flower bearing a flower is called pedicel whereas flower bearing axis of shoot is called peduncle and it may have one to many flowers.

By: Ashwani, Biology teacher,Phagwara.

Difference between phylloclade and phyllode

1. Phylloclade is a modified stem which is green and performs photosynthesis.on the other hand, a phyllode or phyllodia is modified petiole with or without rachis which performs photosynthesis.

2. Phylloclade arises from axil of leaf .Phyllode is not an axillary structure as it itself is a modification of a part of leaf.

3. Axillary bud is absent as phyllode itself develops from a axillary bud. In case of phyllode axillary bud is present .

4. Phylloclade bears leaves , flowers and fruits whereas these structures are absent in phyllode.

5. Phylloclades are mostly succulent and store water, latex, food etc .Phyllodes are never succulent.

6. Phylloclade may help in vegetative reproduction whereas a phyllode do not help in vegetative reproduction.

By: Ashwani, biology teacher,Phagwara.

Difference between leaf tendril and stem tendril

1. Leaf tendrils are mostly unbranched whereas stem tendrils may be branched or unbranched .

2. In case of leaf tendrils scale leaves are absent whereas in case of stem tendrils scale leaves may be present at the point of branching.

3. Buds are absent in leaf tendrils whereas axillary buds may be present in the axil of scale leaves.

4. In case of leaf tendril whole leaf or a part of it develops into tendril whereas a branch of stem or a bud develops into stem tendril.
By: Ashwani Kumar,
Biology teacher,
phagwara.

Pinnate Compound Vs Palmate Compound Leaf

In pinnate compound leaf the leaflets are present on either side of long axis whereas in palmately compound leaf the leaflets are attached to common axis.

In pinnately compound leaf there are two rows of leaflets whereas in palmately compound leaf there is a cluster of leaflets.

In pinnately compound laf there is no joint between leaflet and axis whereas in palmately compound leaf there is joint between leaflets and point of attachment.

Leaflet bearing axis is continuation of petiole or a branch of midrib whereas in palmately compound leaf the leaflets are attached to the tip of the petiole.

By: Ashwani,Biology teacher, Phagwara.

Simple leaf Vs Compound leaf

In simple leaf lamina is not divided into lobes or leaflets whereas in compound leaf lamina is divided into distinct leaflets.

Simple leaves develop on stem in acropetal order whereas in compound leaf all the leaflets develop simultaneously therefore, there is no acropetal arrangement.

Simple leaf may have bud in it
s axil whereas in compound leaf a bud is present in axil of whole leaf but individual leaflet does not bear buds.

In simple leaf stipule may be present at base whereas in compound leaf stipule may be present at base of whole leaf but not at base of individual leaflet (exception is Beans).

By:Ashwani, Biology teacher,Phagwara.

Reticulate Vs Parallel Venation

1. In reticulate venation the main vein give rise to lateral veins which divide and redivide to form a network or reticulum. On the other hand in parallel venation the veins run parallel to each other and do not form reticulum or network.

2. Reticulate venation is found in dicots whereas parallel venation is found in monocots.

By: Ashwani Kumar,
Biology teacher,
Phagwara