Yes they are
The little balls on the bottom of live oak leaves that resemble burrs are most likely galls, which are abnormal growths caused by various insects or mites. Galls can vary in appearance and are triggered by the plant's response to the insect's saliva or larvae. While galls are generally harmless to the tree, they can be unsightly.
Oak galls can be found on oak trees, where they form as a result of certain insects, such as gall wasps, laying their eggs in the tree's tissue. These galls typically appear as round, swollen growths on the leaves, stems, or branches of the oak. Oak galls can be found in various regions where oak trees grow, including forests, parks, and urban areas. The specific types of galls may vary depending on the species of oak and the type of insect involved.
Leaf gall on azaleas is primarily caused by a type of gall-forming insect, such as the azalea leaf gall midge (Asphondylia spp.). These insects lay eggs in the leaves, and as the larvae develop, they stimulate abnormal growth, resulting in swollen, distorted leaf structures known as galls. Environmental stressors, such as excessive moisture or nutrient imbalances, can also contribute to the occurrence of galls. While galls can be unsightly, they typically do not harm the overall health of the azalea.
Galls
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Edward T. Connold has written: 'British oak galls' -- subject(s): Galls (Botany), Oak, Diseases and pests 'Plant galls of Great Britain'
To eat or lay eggs to develop into larvae. galls in saplings are caused by insects
Leaves are under continuous attack by insects, viruses, mold, and fungus. Many of these can cause growths. Many things that look like growths may be cleverly disguised insect eggs, or shape-changing insects in camouflaged cocoons. Some growths on leaves are caused by chemicals emitted by an insect. This causes the leaf to grow a little lump of leaf cells, making a safe spot to protect the insect's eggs.
None ,any fish really should kept in 10 galls or more despite what common population culture depicts.
22 galls. 2 quarts or 22.5 galls. Remember there are 4 quarts in one gallon.
The primary pest that causes galls to develop on corn plants is the corn leaf aphid (Rhopalosiphum maidis), which can induce galls through its feeding behavior. Additionally, the Hessian fly (Mayetiola destructor) can also lead to gall formation as it lays eggs in the plant tissues, causing abnormal growth. These galls can weaken the plant and reduce its overall yield.
Fasciation: abnormal flattening or elongation of plant stems. Witch's broom: dense clusters of branches growing from a single point. Albinism: absence of chlorophyll resulting in white or pale-colored leaves. Galls: abnormal growths caused by insect or microbial infection.